Remove unneeded include for main class

Authtoken class currently includes main nova class that definetily
shouldn't be done.

Change-Id: I779cb0b76187f742555c5c77f3d6b97d35c6be28

manifests/keystone/authtoken.pp

@@ -223,8 +223,6 @@ class nova::keystone::authtoken(
   $token_cache_time               = $::os_service_default,
 ) {
 
-  include ::nova
-
   if is_service_default($password) and ! $::nova::api::admin_password {
     fail('Please set password for nova service user')
   }