Remove unnecessary QEMU setup

Author: motoki317

.github/workflows/release.yml

@@ -22,10 +22,6 @@ jobs:
 
     - uses: actions/checkout@v3
 
-    - name: Set up QEMU
-      uses: docker/setup-qemu-action@v2
-      with:
-        platforms: all
     - name: Set up Docker Buildx
       id: buildx
       uses: docker/setup-buildx-action@v2