Fix PR workflow perms

The `container` workflow does not need the permission,
we use a PAT for writing to the registry.

Signed-off-by: Miroslav Vadkerti <mvadkert@redhat.com>

Author: thrix

.github/workflows/container.yml

@@ -33,9 +33,6 @@ jobs:
       github.event_name != 'pull_request' ||
       github.event.pull_request.head.repo.full_name == github.repository
 
-    permissions:
-      packages: write
-
     strategy:
       matrix:
         include: