Remove CI tests for Swarm

Unit tests will be covered through the faas-netes certifier
and through the Docker build of the gateway.

Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>

.github/workflows/build.yml

@@ -10,51 +10,6 @@ on:
 
 jobs:
 
-  # Run the CI tests
-  build-test:
-    strategy:
-      matrix:
-        go-version: [1.13.x]
-        os: [ubuntu-latest]
-    runs-on: ${{ matrix.os }}
-    steps:
-      - uses: actions/checkout@master
-        with:
-          fetch-depth: 1
-      - name: Install Go
-        uses: actions/setup-go@v2
-        with:
-          go-version: ${{ matrix.go-version }}
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@v1
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v1
-      - name: Get TAG
-        id: get_tag
-        run: echo ::set-output name=TAG::latest-dev
-      - name: Get Repo Owner
-        id: get_repo_owner
-        run: echo ::set-output name=repo_owner::$(echo ${{ github.repository_owner }} | tr '[:upper:]' '[:lower:]')
-      - name: Get Commit Message
-        id: get_commit_message
-        run: echo ::set-output name=commit_message::$(git log -1 --pretty=%B 2>&1 | head -n 1)
-      - name: Build Gateway
-        uses: docker/build-push-action@v2
-        with:
-          context: ./gateway
-          file: ./gateway/Dockerfile
-          platforms: linux/amd64
-          load: true
-          push: false
-          build-args: |
-            VERSION=${{ steps.get_tag.outputs.TAG }}
-            GIT_COMMIT=${{ github.sha }}
-            GIT_COMMIT_MESSAGE=${{ steps.get_commit_message.outputs.commit_message }}
-          tags: |
-            ghcr.io/openfaas/gateway:latest-dev
-      - name: Run CI
-        run: make test-ci
-
   build-gateway:
     runs-on: ubuntu-latest
     strategy:
@@ -92,6 +47,7 @@ jobs:
             ghcr.io/${{ steps.get_repo_owner.outputs.repo_owner }}/gateway:${{ steps.get_tag.outputs.TAG }}
             ghcr.io/${{ steps.get_repo_owner.outputs.repo_owner }}/gateway:${{ github.sha }}
             ghcr.io/${{ steps.get_repo_owner.outputs.repo_owner }}/gateway:latest
+
   build-auth-plugins:
     runs-on: ubuntu-latest
     strategy: