Get rid of docker/setup-buildx-action

.github/workflows/build.yml

@@ -58,9 +58,6 @@ jobs:
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
-
       - name: Build and push
         uses: docker/build-push-action@v6
         with: