Remove unused reference to keyring
Remove unused reference to keyring

There's a unnecessary reference that is not being used.

Change-Id: I5ac85d2331385e4a31970b63fd17e650f82046ca

BjoernT/python-openstackclient,BjoernT/python-openstackclient,openstack/python-openstackclient,varunarya10/python-openstackclient,dtroyer/python-openstackclient,varunarya10/python-openstackclient,redhat-openstack/python-openstackclient,dtroyer/python-openstackclient,redhat-openstack/python-openstackclient,openstack/python-openstackclient