Fixes dependency error in setup.py

Signed-off-by: Benjamin Diaz <bdiaz@whitestack.com>
diff --git a/tox.ini b/tox.ini
index ca49be9..4ef6a64 100644
--- a/tox.ini
+++ b/tox.ini
@@ -25,7 +25,7 @@
 # test suite on all supported python versions. To use it, "pip install tox"
 # and then run "tox" from this directory.
 [tox]
-envlist = py3, flake8
+envlist = py3
 toxworkdir={homedir}/.tox
 
 [testenv]