remove dependency on python-distutils-extra
When attempting to pip install Metadata Anonymisation Toolkit directly from git, its install script requires python-distutils-extra. Frankly, this dependency is a giant pain in the ass, especially on OS X. It's not pip installable, it lives on Canonical's crappy Bazaar repo (requiring yet another dependency and long install line in one's requirements.txt), and unless there's a good reason for requiring it, it should be removed IMNSHO.
(from redmine: created on 2014-06-10, closed on 2015-07-25)