remove frontend build from github cicd

.github/workflows/dev.yaml

@@ -52,16 +52,3 @@ jobs:
           context: .
           file: docker/Dockerfile-backend
           push: false
-  build-frontend:
-    needs: [lint-check]
-    runs-on: ubuntu-latest
-    if: ${{ !github.event.pull_request.draft }}
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-      - name: Build docker image
-        uses: docker/build-push-action@v2
-        with:
-          context: .
-          file: docker/Dockerfile-frontend
-          push: false