feat: don't publish docker containers for interop-tests (#3437)

As per outcome of discussion here: https://github.com/libp2p/test-plans/pull/121#discussion_r1099109241

.github/workflows/publish-interop-test-images.yml

@@ -1,51 +0,0 @@
-name: Publish interop test docker images
-
-on:
-  release:
-    types: [ created ] # Publishing of a containers is triggered on _releases_. Releases are a GH concept building on top of tags.
-  workflow_dispatch: # This workflow can also be triggered manually which is useful for testing, updates to test binaries or publishing of test binaries for older libp2p versions.
-    inputs:
-      dockerTag:
-        description: 'Docker image tag'
-        required: true
-
-env:
-  REGISTRY: ghcr.io
-  PING_TEST_IMAGE_NAME: ${{ github.repository }}/ping-interop-test
-
-jobs:
-  publish-interop-test-images:
-    runs-on: ubuntu-latest
-    permissions:
-      contents: read
-      packages: write
-    steps:
-      - uses: actions/checkout@v3
-
-      - uses: dtolnay/rust-toolchain@9cd00a88a73addc8617065438eff914dd08d0955 # v1
-        with:
-          toolchain: stable
-
-      - uses: Swatinem/rust-cache@359a70e43a0bb8a13953b04a90f76428b4959bb6 # v2.2.0
-        with:
-          shared-key: interop-tests
-          save-if: false
-
-      - name: Log in to the Container registry
-        uses: docker/login-action@f4ef78c080cd8ba55a85445d5b36e214a81df20a # v2.1.0
-        with:
-          registry: ${{ env.REGISTRY }}
-          username: ${{ github.actor }}
-          password: ${{ secrets.GITHUB_TOKEN }}
-
-      - name: Build test binaries
-        run: |
-          sudo apt-get install protobuf-compiler
-          cargo build --release -p interop-tests
-
-      - name: Build and push ping interop docker image
-        run: |
-          TAG="${{ env.REGISTRY }}/${{ env.PING_TEST_IMAGE_NAME }}:${{ inputs.dockerTag || github.event.release.tag_name }}"
-          
-          docker build -t $TAG --build-arg=TEST_BINARY=target/release/ping . -f interop-tests/Dockerfile
-          docker push $TAG