Remove rabbitmq from freezer

freezer dont't user rabbitmq

https://github.com/openstack/freezer-api/blob/master/etc/freezer/freezer-api.conf.sample

Change-Id: I90a76275ab256ba8fc1c6d332e67af29fcbc22ef

ansible/roles/freezer/templates/freezer-api.conf.j2

@@ -8,8 +8,6 @@ bind_host = {{ hostvars[inventory_hostname]['ansible_' + api_interface]['ipv4'][
 bind_port = {{ freezer_api_port }}
 {% endif %}
 
-transport_url = rabbit://{% for host in groups['rabbitmq'] %}{{ rabbitmq_user }}:{{ rabbitmq_password }}@{{ hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] }}:{{ rabbitmq_port }}{% if not loop.last %},{% endif %}{% endfor %}
-
 [keystone_authtoken]
 auth_uri = {{ internal_protocol }}://{{ kolla_internal_fqdn }}:{{ keystone_public_port }}
 auth_url = {{ admin_protocol }}://{{ kolla_internal_fqdn }}:{{ keystone_admin_port }}