Remove TODO in libvirt script
Remove TODO in libvirt script

This is no longer required when Kolla-Ansible is patched.

Note this is *not* safe to backport as it requires the user to
have Kolla-Ansible patched, i.e. would normally break most.

Change-Id: Ic5b9a58d212711a4d6c13822548c92013a6bae50
Related-Bug: #1681461
Depends-On: https://review.opendev.org/735441

openstack/kolla,stackforge/kolla,stackforge/kolla,openstack/kolla,stackforge/kolla