Remove unused debug code
Remove unused debug code

This code was added a long time ago for profiling. While
it might still be useful, it isn't actually referenced anywhere.

If this is needed in the future we can always fetch it from the
git history.

Change-Id: Ic925f48ac010d420ba2d219438b1d34e99283fcc

openstack/designate,openstack/designate,openstack/designate