Updated openstack/openstack
Project: openstack/glance  f54de77ee5cee25e9626f668332f0f852f5308f4
null
Remove unused exceptions

Removed the exception classes in the following because not referenced
anywhere.

 -MissingArgumentError
 -NotAuthorized

Change-Id: I9f8d8e865447d772a9c09141b96075620c6d1b07
Closes-Bug: #1259818