Remove Nova gerrit patch notices from placement
Remove Nova gerrit patch notices from placement

Remove the notifications from Nova patches from the -placement channel,
as they are no longer needed. Since placement specs are still filed
under nova-specs, leave those notifications as-is.

Change-Id: I78261f64ecc42ec8c6f7be307628781def4c0c60

openstack-infra/project-config,openstack-infra/project-config