Update devcontainer-smoketest.yaml

Since we build this from scratch, there should be no need to login to GHCR.

Author: networkfusion

.github/workflows/devcontainer-smoketest.yaml

@@ -33,20 +33,12 @@ jobs:
     runs-on: ubuntu-latest
     permissions:
       contents: read
-      packages: read
 
     steps:
       - uses: actions/checkout@v4
         with:
           submodules: true
 
-      - name: Log into GHCR
-        uses: docker/login-action@v2
-        with:
-          registry: ghcr.io
-          username: ${{ github.actor }}
-          password: ${{ secrets.GITHUB_TOKEN }}
-
       - name: Free Disk Space (Ubuntu)
         uses: jlumbroso/free-disk-space@main
         with: