This uncomments the list additions for the lists.openinfra.dev and
lists.starlingx.io sites on the new mailman server, removing the
configuration for them from the lists.openstack.org server and also
cleaning up some benign entries which were missed in the previous
migration change. With this, the old server should only be hosting
specifically lists.openstack.org mailing lists.
Change-Id: I1e2d332cd4addb8970a3759157bbeceddd77ea95