Remove modification to docker build action

Author: niccokunzmann

.github/workflows/main.yml

@@ -32,18 +32,11 @@ jobs:
     env:
       VERSION: ${{ matrix.postgres }}-${{ matrix.postgis }}
       VARIANT: ${{ matrix.variant }}
-      PLATFORMS: linux/amd64,linux/arm64,linux/arm/v7,linux/386
 
     steps:
     - name: Checkout source
       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
-
     - name: Build docker image for ${{ env.VERSION }} ${{ env.VARIANT }}
       run: make test