[release-2.1] chore: remove usage of script to install golangci-lint

[k8s-infra-cherrypick-robot]

This is an automated cherry-pick of #4367

/assign richardcase

NONE

[Ankitasw]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Ankitasw

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[Ankitasw]

/cherry-pick release-2.0

[k8s-infra-cherrypick-robot]

@Ankitasw: #4368 failed to apply on top of branch "release-2.0":

Applying: chore: remove usage of script to install golanggi-lint
Using index info to reconstruct a base tree...
A	hack/ensure-golangci-lint.sh
M	hack/tools/Makefile
M	versions.mk
Falling back to patching base and 3-way merge...
Auto-merging versions.mk
CONFLICT (content): Merge conflict in versions.mk
Auto-merging hack/tools/Makefile
CONFLICT (content): Merge conflict in hack/tools/Makefile
error: Failed to merge in the changes.
hint: Use 'git am --show-current-patch=diff' to see the failed patch
Patch failed at 0001 chore: remove usage of script to install golanggi-lint
When you have resolved this problem, run "git am --continue".
If you prefer to skip this patch, run "git am --skip" instead.
To restore the original branch and stop patching, run "git am --abort".

In response to this:

/cherry-pick release-2.0

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