Remove unused swift undercloud definition.
Remove unused swift undercloud definition.

The undercloud doesn't contain swift.

Change-Id: I1372ed28d7ee5bec2b0e03941bd8d50a0b749825

trozet/opnfv-tht,dprince/tripleo-heat-templates,trozet/opnfv-tht,redhat-openstack/tripleo-heat-templates,dprince/tripleo-heat-templates,wyg3958/tripleo-heat-templates,rdo-management/tripleo-heat-templates,bcrochet/tripleo-heat-templates,wyg3958/tripleo-heat-templates,trozet/tripleo-heat-templates,bcrochet/tripleo-heat-templates,openstack/tripleo-heat-templates,trozet/opnfv-tht,trozet/tripleo-heat-templates,redhat-openstack/tripleo-heat-templates,bcrochet/tripleo-heat-templates,rdo-management/tripleo-heat-templates,openstack/tripleo-heat-templates