A common workflow is:
* pkg is being marked for deletion by repo-checker [botdel]
* User comes to the rescue and fixes the package, Submits the fix
* Commonly, the delreq is being declined (by factory-maintainer)
* factory-auto declines SR, as pkg now has a delreq and subreq pending
* factory-auto does not consider the 'declined' request as replacable
and complains that it should be revoked (or superseded). Since the
del req was created by repo-checker, 'nobody' has the credentials to
revoke the request. The user, not having a role in the old SR, has
no permission to supersede
So let's just accept a delete request in statet 'declined' as something
that can be replaced by a submit request for the same package.