Updated openstack/openstack
Project: openstack/tempest  b43c2dcd965b5e341053890435df8ccd53409e37
null
remove redundant code in fixed_ips_client for xml

this remove some redundant code in fixed_ips_client for xml interface.
these code hasn't been used.

Change-Id: I40056b43270843ad787326bd69e8020aa5964758