Remove unused parameter from create_stack
Remove unused parameter from create_stack

We cleaned this up a little while ago, but left a bogus param.

Change-Id: I4a1031630ba839b802493f8355010b87c1bb4f69

dtroyer/python-openstacksdk,openstack/python-openstacksdk,stackforge/python-openstacksdk,stackforge/python-openstacksdk,openstack/python-openstacksdk,openstack-infra/shade,openstack-infra/shade,dtroyer/python-openstacksdk