🏗️ build: remove useless checkout

Author: m1212e

.github/workflows/build_image.yml

@@ -18,9 +18,6 @@ jobs:
       matrix:
         architecture: [amd64, arm64]
     steps:
-      - name: Checkout code
-        uses: actions/checkout@v4
-
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3