Remove OpenStack packages from buildsys stein-testing tag
Remove OpenStack packages from buildsys stein-testing tag

In https://review.rdoproject.org/r/#/c/16198, dependencies for
stein were bootstraped.

However, in this review not only dependencies but OpenStack
packages were included in stein-testing repo. That is incorreclty
cross-tagging rocky packages into stein-testing tag. In practical
terms, this has not caused issues in the repos as the synchronization
to buildlogs is not enabled yet and the script which synchronizes
packages to deps repo in trunk.r.o ignores packages in rdo.yml, but
it's missleading and will make wrong packages to be synced to
buildlogs when it's enabled.

This patch removes the OpenStack packages from stein-testing tag.
Note that untagging will be manually done when this is merged.

Change-Id: I3c5f375125545375d9c584428028b8d3567e5ec9

redhat-openstack/rdoinfo,javierpena/rdoinfo