Revert "Merge pull request #342 from pre-commit/latest_virtualenv_bre…

…aks_tests"

This reverts commit 8948624, reversing
changes made to b1e6063.

.travis.yml

@@ -8,9 +8,7 @@ env: # These should match the tox env list
     - TOXENV=pypy
     - TOXENV=pypy3
     - TOXENV=py27 LATEST_GIT=1
-# latest virtualenv combined with downgrading setuptools = sadness
-# https://github.com/pypa/pip/issues/3461
-install: pip install coveralls tox 'virtualenv<14'
+install: pip install coveralls tox
 script: tox
 # Special snowflake.  Our tests depend on making real commits.
 before_install:

requirements-dev.txt

@@ -9,7 +9,3 @@ pytest
 
 # setuptools breaks pypy3 with extraneous output
 setuptools<18.5
-
-# latest virtualenv combined with downgrading setuptools = sadness
-# https://github.com/pypa/pip/issues/3461
-virtualenv<14