@utilities.arguments_not_none<EOL><INDENT>def unassign_assessment_from_bank(self, assessment_id, bank_id):<DEDENT>
<EOL>mgr = self._get_provider_manager('<STR_LIT>', local=True)<EOL>lookup_session = mgr.get_bank_lookup_session(proxy=self._proxy)<EOL>lookup_session.get_bank(bank_id)  <EOL>self._unassign_object_from_catalog(assessment_id, bank_id)<EOL>
Removes an ``Assessment`` from a ``Bank``.

        arg:    assessment_id (osid.id.Id): the ``Id`` of the
                ``Assessment``
        arg:    bank_id (osid.id.Id): the ``Id`` of the ``Bank``
        raise:  NotFound - ``assessment_id`` or ``bank_id`` not found or
                ``assessment_id`` not assigned to ``bank_id``
        raise:  NullArgument - ``assessment_id`` or ``bank_id`` is
                ``null``
        raise:  OperationFailed - unable to complete request
        raise:  PermissionDenied - authorization failure occurred
        *compliance: mandatory -- This method must be implemented.*