Updated openstack/openstack
Project: openstack/horizon  60c1477f772fdf7cb53a2f625a29b9033ed19ee1

Importing with_statement from __future__ is useless

Python 2.5 is not supported by Horizon and since Python 2.6, the
with_statement is enabled by default.

Change-Id: I0b5dc5d3c83c393b4f27ddc1bc1af392a498360c
Closes-Bug: #1360879