Comment 4 for bug 1221805

Reviewed: https://review.openstack.org/158029
Committed: https://git.openstack.org/cgit/openstack/keystone/commit/?id=ed9324ee325b48f26a3883f9d43d96df15ed186b
Submitter: Jenkins
Branch: master

commit ed9324ee325b48f26a3883f9d43d96df15ed186b
Author: Samuel de Medeiros Queiroz <email address hidden>
Date: Sat Feb 21 01:22:20 2015 -0300

    Remove invalid comment/statement at role manager

    An invalid comment and unecessary try except
    statement are removed from role backend.

    Since list_role_assignments_for_role is
    implemented at assignment manager level and uses
    list_role_assignments, which is currently
    implemented by both sql and ldap backends, the
    added comment is invalid and the related bug
    is partially implemented.

    Related-Bug: #1221805

    Change-Id: I55a4df5aae4f21dc64738b0ddf53580d890b9d1c