This repo is now testing only with Python 3, so let's make
a few cleanups:
- Remove python 2.7 stanza from setup.py
- Remove obsolete sections from setup.cfg
- Cleanup doc/source/conf.py to remove now obsolete content.
Change-Id: I467df391b180a2988cf4f7b82a6ea1a4cd4fd4dd
Jonathan Rosser