since we've dropped ubuntu testing on PRs and nightlies, we don't need
these references anymore in tox files.
Signed-off-by: Guillaume Abrioux <gabrioux@redhat.com>
This commits removes these two symlinks.
They were there for backward compatibility and were marked deprecated as
of stable-4.0
Signed-off-by: Guillaume Abrioux <gabrioux@redhat.com>