@abc.abstractmethod<EOL><INDENT>def delete_objective_bank(self, objective_bank_id):<DEDENT>
pass<EOL>
Deletes an ``ObjectiveBank``.

        :param objective_bank_id: the ``Id`` of the ``ObjectiveBank`` to remove
        :type objective_bank_id: ``osid.id.Id``
        :raise: ``NotFound`` -- ``objective_bank_id`` not found
        :raise: ``NullArgument`` -- ``objective_bank_id`` is ``null``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``PermissionDenied`` -- authorization failure

        *compliance: mandatory -- This method must be implemented.*