Drop unused call to non-existent function
Drop unused call to non-existent function

get_by_resource_id() doesn't exist and this code is never hit, drop
it like its hot.

Change-Id: I6499f12427636381056edd24fad3297bcafd49f6

openstack/akanda-rug,stackforge/akanda-rug,openstack/akanda-rug,stackforge/akanda-rug