def register_for_deleted_objective_bank_descendants(self, objective_bank_id=None):
pass<EOL>
Registers for notification if a descendant is removed from fthe
        specified objective bank in the objective bank hierarchy.
        objective_bank_receiver.deleted_objective_bank_descednant() is
        invoked when the specified objective bank experiences a removal
        of one of its descendants.
        arg:    objectiveBankId (osid.id.Id): the Id of the objective
                bank to monitor
        raise:  NullArgument - objectiveBankId is null
        raise:  OperationFailed - unable to complete request
        raise:  PermissionDenied - authorization failure
        compliance: mandatory - This method must be implemented.