Update test-registry workflow

Author: dflook

.github/workflows/test-registry.yaml

@@ -103,9 +103,6 @@ jobs:
   nonsense_credentials:
     runs-on: ubuntu-24.04
     name: Nonsense cloud credentials
-    permissions:
-      contents: read
-      pull-requests: write
     steps:
       - name: Checkout
         uses: actions/checkout@v4