code: def forget_area(self, area_uuid):
          
          if self._config.upload.current_area == area_uuid:
              self._config.upload.current_area = None
          if area_uuid in self._config.upload.areas:
              del self._config.upload.areas[area_uuid]
              self.save()
docs: Remove an Upload Area from out cache of known areas.
          :param str area_uuid: The RFC4122-compliant UUID of the Upload Area.