Change to use native arm runner (#8414)

.github/workflows/release-docker-gb200.yml

@@ -10,7 +10,7 @@ on:
 jobs:
   publish:
     if: github.repository == 'sgl-project/sglang'
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04-arm
     environment: 'prod'
     steps:
       - name: Delete huge unnecessary tools folder
@@ -19,9 +19,6 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
 
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@v3
-
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3