nova-compute: Remove unused parameters/condition
nova-compute: Remove unused parameters/condition

The use_tls_for_live_migration condition and the parameters used to
determine it are not used in the nova-compute template. These are
currently used in nova-libvirt templates.

Change-Id: If8af4250bef597afd2a4afcde2f2cab2188b503d

openstack/tripleo-heat-templates,openstack/tripleo-heat-templates