The deprecated noauth middleware need to be removed

[Liusheng]

As The TODO list in source code marked, the noauth middleware has been deprecated and should be removed in Liberty. So we should cleanup it now.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/184424

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/184424
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=971da87e4856b671cecca3719f73da2098833513
Submitter: Jenkins
Branch: master

commit 971da87e4856b671cecca3719f73da2098833513
Author: liu-sheng <email address hidden>
Date: Wed May 20 14:47:53 2015 +0800

    Clean the deprecated noauth middleware

    As The TODO list in source code marked, the noauth middleware has been
    deprecated and should be removed in Liberty. So we should cleanup it now.

    Co-Authored-By: Kevin_Zheng <email address hidden>

    Change-Id: I6288239347ad6766870299eed55300a46129f347
    Closes-Bug: 1455308