Remove ceilometer vars present in group_vars

There is no need to redefine these vars at the playbook
level when they are already defined in the group_vars for
the all group.

Change-Id: I4ef48b5cd34f5c751bf927fce4c9ffa9bd590992

playbooks/os-ceilometer-install.yml

@@ -114,8 +114,6 @@
         - "ceilometer-rsyslog-client"
   vars:
     is_metal: "{{ properties.is_metal|default(false) }}"
-    ceilometer_rabbitmq_userid: ceilometer
-    ceilometer_rabbitmq_vhost: /ceilometer
     ceilometer_rabbitmq_servers: "{{ rabbitmq_servers }}"
     ceilometer_rabbitmq_port: "{{ rabbitmq_port }}"
     ceilometer_rabbitmq_use_ssl: "{{ rabbitmq_use_ssl }}"