Comment 11 for bug 1160277

I removed ~openstack-planet-core.

For openstack-{essex,diablo}-maint, they have a mailing-list associated, which causes removal pain. We may actually use that ML to post bitrot job fails, please doublecheck before we can proceed with ML removal. Then the groups themselves can be removed, as they contain only one member (Daviey).

CCed Daviey to get his opinion on this.