code: def clear_oui(self, port_uuid):
          
          if port_uuid in self.oui_vif_map:
              del self.oui_vif_map[port_uuid]
          else:
              LOG.debug("OUI does not exist")
docs: Clears the OUI specific info.
  
          :param uuid: vNIC UUID
  
          Currently only one OUI per VSI fixme(padkrish)