flake8
passed.
JSHint
passed.
Nuke old ez_setup.py.
Review Request #9506 — Created Jan. 20, 2018 and submitted
RBTools had a fallback to use the ez_setup bootstrap for setuptools, but
this is no longer necessary on any supported versions of Python. We can
remove this.
Ran setup.py develop on both Python 2.7 and 3.6.
