zuul: Remove nova-live-migration from check queue
zuul: Remove nova-live-migration from check queue

As documented in the associated TODO this job can be removed now that it
has been migrated to zuulv3 by Ib342e2d3c395830b4667a60de7e492d3b9de2f0a.

Change-Id: Id7c0fd8eec09386cd638956a46c1f75844194b9d

nawawi/openstack,nawawi/openstack,openstack-dev/devstack,openstack-dev/devstack