Interface out all action log data model operations

This will allow us to reimplement the logs data model against a non-database system in the near future

endpoints/keyserver/models_pre_oci.py

@@ -38,10 +38,6 @@ class PreOCIModel(KeyServerDataInterface):
     except data.model.ServiceKeyDoesNotExist:
       raise ServiceKeyDoesNotExist()
 
-  def log_action(self, action_name, ip, metadata_dict=None):
-    metadata_dict = {} if metadata_dict is None else metadata_dict
-    data.model.log.log_action(action_name, None, metadata=metadata_dict, ip=ip)
-
 
 pre_oci_model = PreOCIModel()