remove QEMU action from pipeline

.forgejo/workflows/build.yaml

@@ -33,9 +33,6 @@ jobs:
           registry: ${{ steps.repository.outputs.registry }}
           username: "${{ secrets.PACKAGES_USER }}"
           password: "${{ secrets.PACKAGES_TOKEN }}"
-      -
-        name: Set up QEMU
-        uses: docker/setup-qemu-action@v3
       -
         name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
@@ -49,5 +46,4 @@ jobs:
           push: true
           allow: network.host
           network: host
-          platforms: linux/amd64,linux/arm64
           tags: ${{ steps.docker.outputs.tags }}