Merge "Add policy to InstanceGroup object"

nova/db/sqlalchemy/api_models.py

@@ -456,10 +456,6 @@ class InstanceGroup(API_BASE):
                               "group_name": self.name})
         return self._policies[0] if self._policies else None
 
-    @property
-    def policies(self):
-        return [p.policy for p in self._policies]
-
     @property
     def members(self):
         return [m.instance_uuid for m in self._members]