Systems without a LOCALE present will not be able to read our file
appropriately on Python 3. This was causing our Python 3 CI jobs on
GitLab to fail.

This is an emerging best practice and there is little reason to not
follow it

This proved simpler because I realized something important: Most of the
code that the old integration was using was in fact doing nothing of
value. Since we can't meaningfully allow users to use command-line
options as parameters to `python setup.py flake8`, we just remove the
work that we do to set up those attributes and parse them.

This will make the transition to pycodestyle much easier