remove buildx

Author: bendhouseart

.github/workflows/docker-build.yaml

@@ -28,9 +28,6 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v4
 
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
-        
       - name: Build Docker image
         run: |
           make dockerbuild USE_LOCAL_FREESURFER=${{ github.event.inputs.use_local_freesurfer || 'False' }}