Remove endpoint_type from neutron.conf [DEFAULT] group

This option appears to have been removed in 2015 in Neutron change
I9cf36e1fd3a009c175e0d475af407a30f4e5c408.

Change-Id: Ib2d94743aeeff328c900ab1607900844acb4462b

ansible/roles/neutron/templates/neutron.conf.j2

@@ -12,7 +12,6 @@ bind_host = {{ api_interface_address }}
 bind_port = {{ neutron_server_listen_port }}
 
 api_paste_config = /usr/share/neutron/api-paste.ini
-endpoint_type = internalURL
 
 api_workers = {{ openstack_service_workers }}
 metadata_workers = {{ openstack_service_workers }}