Remove Docker Support for Antrea Windows

This patch removes the support for Docker from the Antrea Windows Agent.
The specific changes made in this commit include modifying the CNI call to return an error when the runtime
is identified as Docker on Windows and deleting related functions.

Signed-off-by: Shuyang Xin <gavinx@vmware.com>

Makefile

@@ -419,9 +419,8 @@ build-migrator:
 manifest:
 	@echo "===> Generating dev manifest for Antrea <==="
 	$(CURDIR)/hack/generate-standard-manifests.sh --mode dev --out build/yamls
-	$(CURDIR)/hack/generate-manifest-windows.sh --mode dev > build/yamls/antrea-windows.yml
-	$(CURDIR)/hack/generate-manifest-windows.sh --mode dev --containerd > build/yamls/antrea-windows-containerd.yml
-	$(CURDIR)/hack/generate-manifest-windows.sh --mode dev --containerd --include-ovs > build/yamls/antrea-windows-containerd-with-ovs.yml
+	$(CURDIR)/hack/generate-manifest-windows.sh --mode dev > build/yamls/antrea-windows-containerd.yml
+	$(CURDIR)/hack/generate-manifest-windows.sh --mode dev --include-ovs > build/yamls/antrea-windows-containerd-with-ovs.yml
 	$(CURDIR)/hack/update-checksum-windows.sh
 	$(CURDIR)/hack/generate-manifest-flow-aggregator.sh --mode dev > build/yamls/flow-aggregator.yml