Clean up tox.ini
Clean up tox.ini

Remove environments we don't care about for the moment.

Change-Id: I45ee54ff0fa54104423dfd0255ca0efa9b197bc3
Signed-off-by: Paul Belanger <b4265d8fef626f73eff739ef4ffce9d45b30eddd@polybeacon.com>

kickstandproject/backblast