NotImplementedError for CentOS Stream propose-downstream

[sentry-io[bot]]

Sentry Issue: PCKT-002-PACKIT-SERVICE-7M7

NotImplementedError: 
(3 additional frame(s) were not displayed)
...
  File "packit/api.py", line 1475, in push_and_create_pr
    repo.push_to_fork(repo.local_project.ref, force=True, sync_acls=sync_acls)
  File "packit/distgit.py", line 302, in push_to_fork
    self.sync_acls(self.local_project.git_project, fork)
  File "packit/base_git.py", line 600, in sync_acls
    fork.remove_user(user)
  File "ogr/abstract.py", line 106, in wrapper
    return function(*args, **kwargs)
  File "ogr/abstract.py", line 1564, in remove_user
    raise NotImplementedError()

TODO:

• [ ] check if maintainer can do changes on the MR on GitLab, if yes, disable the sync of users
• [ ] if cannot, implement remove_user in ogr

[lbarcziova]

This is caused by remove_user not implemented for ogr's GitlabProject.

[lbarcziova]

Checked on this PR, looks like both via UI and API the PR can be edited by maintainers by default:

(Docs)