engine: Remove invalid action groups

Invalid action groups were added to various roles
for network labels actions. Those action groups
aren't being used and have no representation on
the engine, therefore they should be removed.

Change-Id: I892378087fdbad15b4b1606c9e55c8d86d8503d0
Bug-Url: https://bugzilla.redhat.com/1072501
Signed-off-by: Moti Asayag <masayag@redhat.com>