Remove mappings in collectd plugin config

We don't need mappings. We can just use the keys defined in the user model.
diff --git a/haproxy/files/collectd_haproxy.conf b/haproxy/files/collectd_haproxy.conf
index 8c08f18..93f82c1 100644
--- a/haproxy/files/collectd_haproxy.conf
+++ b/haproxy/files/collectd_haproxy.conf
@@ -1,26 +1,6 @@
 Import "haproxy"
 
 <Module "haproxy">
-    Mapping "contrail_analytics" "contrail-analytics"
-    Mapping "contrail_api" "contrail-api"
-    Mapping "contrail_discovery" "contrail-discovery"
-
-    Mapping "mysql_cluster" "mysql"
-
-    Mapping "cinder_api" "cinder-api"
-    Mapping "glance_api" "glance-api"
-    Mapping "glance_registry" "glance-registry-api"
-    Mapping "heat_api" "heat-api"
-    Mapping "heat_api_cfn" "heat-cfn-api"
-    Mapping "heat_api_cloudwatch" "heat-cloudwatch-api"
-    Mapping "horizon_web" "horizon-web"
-    Mapping "keystone_admin" "keystone-admin-api"
-    Mapping "keystone_auth" "keystone-public-api"
-    Mapping "nova_metadata" "nova-metadata-api"
-    Mapping "nova_ec2_api" "nova-ec2-api"
-    Mapping "nova_openstack_api" "nova-api"
-    Mapping "neutron_api" "neutron-api"
-
     ProxyIgnore "rabbitmq_cluster"
     ProxyIgnore "contrail_collector_stats"
     ProxyIgnore "contrail_config_stats"