Remove __future__ usages

test/refactor.py

@@ -4,7 +4,6 @@ Refactoring tests work a little bit similar to integration tests. But the idea
 is here to compare two versions of code. If you want to add a new test case,
 just look at the existing ones in the ``test/refactor`` folder and copy them.
 """
-from __future__ import with_statement
 import os
 import platform
 import re