Remove loadimpact/k6 Docker image from build process

.github/workflows/build.yml

@@ -22,8 +22,6 @@ defaults:
 
 env:
   APP_NAME: "k6"
-  # We'll push to two DockerHub repos at once; `loadimpact/k6` repo is required for backwards compatibility
-  LI_DOCKER_IMAGE_ID: "loadimpact/k6"
   DOCKER_IMAGE_ID: "grafana/k6"
   GHCR_IMAGE_ID: ${{ github.repository }}
   DEFAULT_GO_VERSION: "1.21.5"
@@ -185,11 +183,6 @@ jobs:
             --platform linux/amd64,linux/arm64 \
             -t $DOCKER_IMAGE_ID:master-with-browser \
             -t ghcr.io/$GHCR_IMAGE_ID:master-with-browser .
-          # LoadImpact images are deprecated, we don't build arm64 for it.
-          docker buildx build --push \
-            --target legacy \
-            --platform linux/amd64 \
-            -t $LI_DOCKER_IMAGE_ID:master .
       - name: Publish tagged version images
         if: ${{ startsWith(github.ref, 'refs/tags/v') }}
         run: |
@@ -205,11 +198,6 @@ jobs:
             --platform linux/amd64,linux/arm64 \
             -t $DOCKER_IMAGE_ID:$VERSION-with-browser \
             -t ghcr.io/$GHCR_IMAGE_ID:$VERSION-with-browser .
-          # LoadImpact images are deprecated, we don't build arm64 for it.
-          docker buildx build --push \
-            --target legacy \
-            --platform linux/amd64 \
-            -t $LI_DOCKER_IMAGE_ID:$VERSION .
           # We also want to tag the latest stable version as latest
           if [[ ! "$VERSION" =~ (RC|rc) ]]; then
             echo "Publish $GHCR_IMAGE_ID:latest"
@@ -223,11 +211,6 @@ jobs:
               --platform linux/amd64,linux/arm64 \
               -t $DOCKER_IMAGE_ID:latest-with-browser \
               -t ghcr.io/$GHCR_IMAGE_ID:latest-with-browser .
-            # LoadImpact images are deprecated, we don't build arm64 for it.
-            docker buildx build --push \
-              --target legacy \
-              --platform linux/amd64 \
-              -t $LI_DOCKER_IMAGE_ID:latest .
           fi
 
   package-windows: