Remove pinning of dependencies in tox.ini
[tox]
envlist = py,flake8,docs
minversion = 2.4.0
-# Pinning more-itertools and specifying virtualenv minimum version are
-# workaround hacks for Python 2.7 and can be dropped when we drop support for
-# Python 2.7.
-requires = virtualenv >= 16.4.0
- more-itertools==4.2.0
+requires = virtualenv
+ more-itertools
pathlib2
[testenv]
