ci: disable stale operator build job (operator is in bootnode/universe)

.github/workflows/ci.yml

@@ -148,40 +148,12 @@ jobs:
 
   build-operator:
     runs-on: ubuntu-latest
-    if: github.event_name == 'push' && github.ref == 'refs/heads/main'
+    if: false  # operator build removed — operator lives in bootnode/universe repo
     permissions:
       contents: read
       packages: write
-
     steps:
-      - uses: actions/checkout@v4
-
-      - name: Log in to Container Registry
-        uses: docker/login-action@v3
-        with:
-          registry: ${{ env.REGISTRY }}
-          username: ${{ github.actor }}
-          password: ${{ secrets.GITHUB_TOKEN }}
-
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
-
-      - name: Get short SHA
-        id: sha
-        run: echo "short=$(git rev-parse --short HEAD)" >> $GITHUB_OUTPUT
-
-      - name: Build and push operator image
-        uses: docker/build-push-action@v5
-        with:
-          context: ./operator
-          file: ./operator/Dockerfile
-          platforms: linux/amd64
-          push: true
-          tags: |
-            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:operator-latest
-            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:operator-${{ steps.sha.outputs.short }}
-          cache-from: type=gha,scope=operator
-          cache-to: type=gha,mode=max,scope=operator
+      - run: echo "Operator build skipped"
 
   build-and-push:
     runs-on: ubuntu-latest