Stop handler flush
Stop handler flush

With https://review.opendev.org/c/openstack/ansible-role-chrony/+/647947
this is no longer necessary as we are not using handlers. Additionally
using handlers is no longer recommended with tripleo_free.

Change-Id: I8d52b0bbacc9af4a101793323e02191b18243cba

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