diff --git a/.github/workflows/auto-add-parachain-issues.yml b/.github/workflows/auto-add-parachain-issues.yml
deleted file mode 100644
index 6b5222b6ff74..000000000000
--- a/.github/workflows/auto-add-parachain-issues.yml
+++ /dev/null
@@ -1,30 +0,0 @@
-# If there are new issues related to the async backing feature,
-# add it to the parachain team's board and set a custom "meta" field.
-
-name: Add selected issues to Parachain team board
-on:
-  issues:
-    types:
-      - labeled
-
-jobs:
-  add-parachain-issues:
-    if: github.event.label.name == 'T16-async_backing'
-    runs-on: ubuntu-latest
-    steps:
-      - name: Generate token
-        id: generate_token
-        uses: tibdex/github-app-token@v2.1.0
-        with:
-          app_id: ${{ secrets.PROJECT_APP_ID }}
-          private_key: ${{ secrets.PROJECT_APP_KEY }}
-      - name: Sync issues
-        uses: paritytech/github-issue-sync@v0.3.2
-        with:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          PROJECT_TOKEN: ${{ steps.generate_token.outputs.token }}
-          project: 119 # Parachain team board
-          project_field: 'meta'
-          project_value: 'async backing'
-          labels: |
-            T16-async_backing
diff --git a/.github/workflows/check-runtimes.yml b/.github/workflows/check-runtimes.yml
deleted file mode 100644
index 0e5ad104766a..000000000000
--- a/.github/workflows/check-runtimes.yml
+++ /dev/null
@@ -1,94 +0,0 @@
-name: Check Runtimes Specs
-# This GH Workflow fetches the runtimes available in a release.
-# It then compares their metadata with reference specs located under
-#  .github/runtime_specs.
-
-on:
-  workflow_dispatch:
-    inputs:
-      release_id:
-        description: |
-          Release ID.
-          You can find it using the command:
-          curl -s \
-            -H "Authorization: Bearer ${GITHUB_TOKEN}" https://api.github.com/repos/paritytech/polkadot-sdk/releases | \
-            jq '.[] | { name: .name, id: .id }'
-        required: true
-        type: string
-
-  # This trigger unfortunately does not work as expected.
-  # https://github.com/orgs/community/discussions/47794
-  # release:
-  #   types: [edited]
-
-env:
-  RUNTIME_SPECS_DIR: .github/runtime_specs
-  DATA_DIR: runtimes
-  RELEASE_ID: ${{ inputs.release_id }}
-  REPO: ${{ github.repository }}
-
-jobs:
-  find-specs:
-    name: Fetch runtime specs
-    outputs:
-      specs: ${{ steps.get-list.outputs.specs }}
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout the repo
-        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
-
-      - name: Get list
-        id: get-list
-        run: |
-          lst=$(ls $RUNTIME_SPECS_DIR/*.json | xargs -I{} basename "{}" .json | jq -R .| jq -sc .)
-          echo "Found: $lst"
-          echo "specs=$lst" >> $GITHUB_OUTPUT
-
-  check-runtimes:
-    name: Check runtime specs
-    runs-on: ubuntu-latest
-    needs:
-      - find-specs
-
-    strategy:
-      matrix:
-        specs: ${{ fromJSON(needs.find-specs.outputs.specs) }}
-
-    steps:
-      - name: Checkout the repo
-        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
-
-      - name: Fetch release artifacts based on release id
-        env:
-          OUTPUT_DIR: ${{ env.DATA_DIR }}
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        run: |
-          . ./.github/scripts/common/lib.sh
-          fetch_release_artifacts
-
-      - name: Install tooling
-        env:
-          SUBWASM_VERSION: v0.20.0
-          DL_BASE_URL: https://github.com/chevdor/subwasm/releases/download
-        run: |
-          wget $DL_BASE_URL/$SUBWASM_VERSION/subwasm_linux_amd64_$SUBWASM_VERSION.deb \
-            -O subwasm.deb
-          sudo dpkg -i subwasm.deb
-          subwasm --version
-
-      - name: Extract metadata JSON for ${{ matrix.specs }}
-        env:
-          RUNTIME: ${{ matrix.specs }}
-        run: |
-          WASM=$(ls ${DATA_DIR}/${RUNTIME}*.wasm)
-          echo "WASM=$WASM"
-          subwasm show --json "$WASM" > "${DATA_DIR}/${RUNTIME}.json"
-
-      - name: Check specs for ${{ matrix.specs }}
-        id: build
-        env:
-          RUNTIME: ${{ matrix.specs }}
-          LOGLEVEL: info
-        run: |
-          python --version
-          .github/scripts/check-runtime.py "${DATA_DIR}/${RUNTIME}.json" "${RUNTIME_SPECS_DIR}/${RUNTIME}.json"
diff --git a/.github/workflows/check-workspace.yml b/.github/workflows/check-workspace.yml
deleted file mode 100644
index 81ec311ccce8..000000000000
--- a/.github/workflows/check-workspace.yml
+++ /dev/null
@@ -1,21 +0,0 @@
-name: Check workspace
-
-on:
-  pull_request:
-  merge_group:
-
-jobs:
-  check-workspace:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.0 (22. Sep 2023)
-
-      - name: install python deps
-        run: pip3 install toml
-
-      - name: check integrity
-        run: >
-            python3 .github/scripts/check-workspace.py .
-            --exclude
-            "substrate/frame/contracts/fixtures/build"
-            "substrate/frame/contracts/fixtures/contracts/common"
diff --git a/.github/workflows/subsystem-benchmarks.yml b/.github/workflows/subsystem-benchmarks.yml
deleted file mode 100644
index 1a726b669e90..000000000000
--- a/.github/workflows/subsystem-benchmarks.yml
+++ /dev/null
@@ -1,55 +0,0 @@
-# The actions takes json file as input and runs github-action-benchmark for it.
-
-on:
-  workflow_dispatch:
-    inputs:
-      benchmark-data-dir-path:
-        description: "Path to the benchmark data directory"
-        required: true
-        type: string
-      output-file-path:
-        description: "Path to the benchmark data file"
-        required: true
-        type: string
-
-jobs:
-  subsystem-benchmarks:
-    runs-on: ubuntu-latest
-    environment: subsystem-benchmarks
-    steps:
-      - name: Validate inputs
-        run: |
-          echo "${{ github.event.inputs.benchmark-data-dir-path }}" | grep -P '^[a-z\-]'
-          echo "${{ github.event.inputs.output-file-path }}" | grep -P '^[a-z\-]+\.json'
-
-      - name: Checkout Sources
-        uses: actions/checkout@v4.1.2
-        with:
-          fetch-depth: 0
-          ref: "gh-pages"
-
-      - name: Copy bench results
-        id: step_one
-        run: |
-          cp bench/gitlab/${{ github.event.inputs.output-file-path }} ${{ github.event.inputs.output-file-path }}
-
-      - name: Switch branch
-        id: step_two
-        run: |
-          git checkout master --
-
-      - uses: actions/create-github-app-token@v1
-        id: app-token
-        with:
-          app-id: ${{ secrets.POLKADOTSDK_GHPAGES_APP_ID }}
-          private-key: ${{ secrets.POLKADOTSDK_GHPAGES_APP_KEY }}
-
-      - name: Store benchmark result
-        uses: benchmark-action/github-action-benchmark@v1
-        with:
-          tool: "customSmallerIsBetter"
-          name: ${{ github.event.inputs.benchmark-data-dir-path }}
-          output-file-path: ${{ github.event.inputs.output-file-path }}
-          benchmark-data-dir-path: "bench/${{ github.event.inputs.benchmark-data-dir-path }}"
-          github-token: ${{ steps.app-token.outputs.token }}
-          auto-push: true
diff --git a/.github/workflows/sync-templates.yml b/.github/workflows/sync-templates.yml
deleted file mode 100644
index 511c9d0e8cd0..000000000000
--- a/.github/workflows/sync-templates.yml
+++ /dev/null
@@ -1,159 +0,0 @@
-name: Synchronize templates
-
-
-# This job is used to keep the repository templates up-to-date.
-# The code of the templates exist inside the monorepo, and upon releases we synchronize the repositories:
-# - https://github.com/paritytech/polkadot-sdk-minimal-template
-# - https://github.com/paritytech/polkadot-sdk-parachain-template
-# - https://github.com/paritytech/polkadot-sdk-solochain-template
-#
-# The job moves the template code out of the monorepo,
-# replaces any references to the monorepo workspace using psvm and toml-cli,
-# checks that it builds successfully,
-# and commits and pushes the result to each respective repository.
-# If the build fails, a PR is created instead for manual inspection.
-
-
-on:
-  # A manual dispatch for now - automatic on releases later.
-  workflow_dispatch:
-    inputs:
-      crate_release_version:
-        description: 'A release version to use, e.g. 1.9.0'
-        required: true
-
-
-jobs:
-  sync-templates:
-    runs-on: ubuntu-latest
-    environment: master
-    strategy:
-      fail-fast: false
-      matrix:
-        template: ["minimal", "solochain", "parachain"]
-    env:
-      template-path: "polkadot-sdk-${{ matrix.template }}-template"
-    steps:
-
-      # 1. Prerequisites.
-
-      - name: Configure git identity
-        run: |
-          git config --global user.name "Template Bot"
-          git config --global user.email "163342540+paritytech-polkadotsdk-templatebot[bot]@users.noreply.github.com"
-      - uses: actions/checkout@v3
-        with:
-          path: polkadot-sdk
-          ref: "release-crates-io-v${{ github.event.inputs.crate_release_version }}"
-      - name: Generate a token for the template repository
-        id: app_token
-        uses: actions/create-github-app-token@v1.9.3
-        with:
-          owner: "paritytech"
-          repositories: "polkadot-sdk-${{ matrix.template }}-template"
-          app-id: ${{ secrets.TEMPLATE_APP_ID }}
-          private-key: ${{ secrets.TEMPLATE_APP_KEY }}
-      - uses: actions/checkout@v3
-        with:
-          repository: "paritytech/polkadot-sdk-${{ matrix.template }}-template"
-          path: "${{ env.template-path }}"
-          token: ${{ steps.app_token.outputs.token }}
-      - name: Install toml-cli
-        run: cargo install --git https://github.com/gnprice/toml-cli --rev ea69e9d2ca4f0f858110dc7a5ae28bcb918c07fb # v0.2.3
-      - name: Install Polkadot SDK Version Manager
-        run: cargo install --git https://github.com/paritytech/psvm --rev c41261ffb52ab0c115adbbdb17e2cb7900d2bdfd psvm # master
-      - name: Rust compilation prerequisites
-        run: |
-          sudo apt update
-          sudo apt install -y \
-            protobuf-compiler
-          rustup target add wasm32-unknown-unknown
-          rustup component add rustfmt clippy rust-src
-      
-      # 2. Yanking the template out of the monorepo workspace.
-
-      - name: Use psvm to replace git references with released creates.
-        run: find . -type f -name 'Cargo.toml' -exec psvm -o -v ${{ github.event.inputs.crate_release_version }} -p {} \;
-        working-directory: polkadot-sdk/templates/${{ matrix.template }}/
-      - name: Create a new workspace Cargo.toml
-        run: |
-          cat << EOF > Cargo.toml
-          [workspace.package]
-          license = "MIT-0"
-          authors = ["Parity Technologies <admin@parity.io>"]
-          homepage = "https://substrate.io"
-
-          [workspace]
-          members = [
-              "node",
-              "pallets/template",
-              "runtime",
-          ]
-          resolver = "2"
-          EOF
-        shell: bash
-        working-directory: polkadot-sdk/templates/${{ matrix.template }}/
-      - name: Update workspace configuration
-        run: |
-          set -euo pipefail
-          # toml-cli has no overwrite functionality yet, so we use temporary files.
-          # We cannot pipe the output straight to the same file while the CLI still reads and processes it.
-
-          toml set templates/${{ matrix.template }}/Cargo.toml 'workspace.package.repository' "https://github.com/paritytech/polkadot-sdk-${{ matrix.template }}-template.git" > Cargo.temp
-          mv Cargo.temp ./templates/${{ matrix.template }}/Cargo.toml
-
-          toml set templates/${{ matrix.template }}/Cargo.toml 'workspace.package.edition' "$(toml get --raw Cargo.toml 'workspace.package.edition')" > Cargo.temp
-          mv Cargo.temp ./templates/${{ matrix.template }}/Cargo.toml
-
-          toml get Cargo.toml 'workspace.lints' --output-toml >> ./templates/${{ matrix.template }}/Cargo.toml
-
-          toml get Cargo.toml 'workspace.dependencies' --output-toml >> ./templates/${{ matrix.template }}/Cargo.toml
-        working-directory: polkadot-sdk
-      - name: Print the result Cargo.tomls for debugging
-        if: runner.debug == '1'
-        run: find . -type f -name 'Cargo.toml' -exec cat {} \;
-        working-directory: polkadot-sdk/templates/${{ matrix.template }}/
-
-      - name: Clean the destination repository
-        run: rm -rf ./*
-        working-directory: "${{ env.template-path }}"
-      - name: Copy over the new changes
-        run: |
-          cp -r polkadot-sdk/templates/${{ matrix.template }}/* "${{ env.template-path }}/"
-
-      # 3. Verify the build. Push the changes or create a PR.
-
-      # We've run into out-of-disk error when compiling in the next step, so we free up some space this way.
-      - name: Free Disk Space (Ubuntu)
-        uses: jlumbroso/free-disk-space@54081f138730dfa15788a46383842cd2f914a1be # 1.3.1
-        with:
-          android: true # This alone is a 12 GB save.
-          # We disable the rest because it caused some problems. (they're enabled by default)
-          # The Android removal is enough.
-          dotnet: false
-          haskell: false
-          large-packages: false
-          swap-storage: false
-
-      - name: Check if it compiles
-        id: check-compilation
-        run: cargo check && cargo test
-        working-directory: "${{ env.template-path }}"
-        timeout-minutes: 90
-      - name: Create PR on failure
-        if: failure() && steps.check-compilation.outcome == 'failure'
-        uses: peter-evans/create-pull-request@5b4a9f6a9e2af26e5f02351490b90d01eb8ec1e5 # v5
-        with:
-          path: "${{ env.template-path }}"
-          token: ${{ steps.app_token.outputs.token }}
-          add-paths: |
-            ./*
-          title: "[Don't merge] Update the ${{ matrix.template }} template"
-          body: "The template has NOT been successfully built and needs to be inspected."
-          branch: "update-template/${{ github.event_name }}"
-      - name: Push changes
-        run: |
-          git add -A .
-          git commit --allow-empty -m "Update template triggered by ${{ github.event_name }}"
-          git push
-        working-directory: "${{ env.template-path }}"