Remove SETUP_QEMU_IMAGE variable and image input from QEMU setup (#1179)

Author: Copilot

.github/workflows/ci.yml

@@ -58,7 +58,6 @@ jobs:
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v4.0.0
         with:
-          image: ${{vars.SETUP_QEMU_IMAGE}}
           platforms: ${{steps.info.outputs.platforms}}
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v4.0.0

.github/workflows/release.yml

@@ -30,7 +30,6 @@ jobs:
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v4.0.0
         with:
-          image: ${{vars.SETUP_QEMU_IMAGE}}
           platforms: ${{env.PLATFORMS}}
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v4.0.0