Updated openstack/openstack
Project: openstack/nova  e0db88b25c9d3ee4364d6023bd76028151c89710

Remove a not used function _get_ip_by_id

There is a not used function in floating_ips.py, Remove it
since no one use it.

Change-Id: I6a45c73d9e2a897fdc45f00e7363db204663cd3c