Remove superfluous variable assignment statements
Remove superfluous variable assignment statements

wait and interval are already defaulted in the function signature

Change-Id: I66317a24f8327c464343ac13fc0126c34915eeda

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