[Docs] Remove chardet mock to fix requests version check

 * chardet is an easily installed pure python module so doesn't need mocking.

1 files changed, 0 insertions, 2 deletions

diff --git a/tox.ini b/tox.ini
index 693f217d2..2cb527f87 100644
--- a/tox.ini
+++ b/tox.ini
@@ -177,8 +177,6 @@ deps =
     {[testenv]deps}
     sphinx
     sphinxcontrib-napoleon
-# Pin requests version due to bug: https://github.com/requests/requests/issues/4125
-    requests==2.15.1
 whitelist_externals =
     {[testenv]whitelist_externals}