diff --git a/tox.ini b/tox.ini
index b860b9c03355..75702604697d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -84,14 +84,6 @@ deps =
   {[testenv]deps}
   openstack-placement>=1.0.0
 commands =
-# NOTE(cdent): The group_regex describes how stestr will group tests into the
-# same process when running concurently. The following ensures that gabbi tests
-# coming from the same YAML file are all in the same process. This is important
-# because each YAML file represents an ordered sequence of HTTP requests. Note
-# that tests which do not match this regex will not be grouped in any
-# special way. See the following for more details.
-# http://stestr.readthedocs.io/en/latest/MANUAL.html#grouping-tests
-# https://gabbi.readthedocs.io/en/latest/#purpose
   stestr --test-path=./nova/tests/functional run {posargs}
   stestr slowest