Don't build a second copy of containerd-shim-runhcs-v1.exe

`make binaries` already builds containerd-shim-runhcs-v1.exe next to
containerd.exe, so there's no need to spend time checking out and
building it again.

Signed-off-by: Paul "TBBle" Hampson <Paul.Hampson@Pobox.com>

.github/workflows/ci.yml

@@ -254,11 +254,6 @@ jobs:
         with:
           path: src/github.com/containerd/containerd
 
-      - uses: actions/checkout@v2
-        with:
-          repository: Microsoft/hcsshim
-          path: src/github.com/Microsoft/hcsshim
-
       - uses: actions/checkout@v2
         with:
           repository: kubernetes-sigs/cri-tools
@@ -279,12 +274,6 @@ jobs:
         run: |
           set -o xtrace
           mingw32-make.exe binaries
-          bindir="$(pwd)"
-          SHIM_COMMIT=$(grep 'Microsoft/hcsshim ' go.mod | awk '{print $2}')
-          cd ../../Microsoft/hcsshim
-          git fetch --tags origin "${SHIM_COMMIT}"
-          git checkout "${SHIM_COMMIT}"
-          GO111MODULE=on go build -mod=vendor -o "${bindir}/integration/client/containerd-shim-runhcs-v1.exe" ./cmd/containerd-shim-runhcs-v1
           cd ../../kubernetes-sigs/cri-tools
           make critest