diff --git a/cms/envs/common.py b/cms/envs/common.py
index 0c523a7833..d6ce7cf47b 100644
--- a/cms/envs/common.py
+++ b/cms/envs/common.py
@@ -60,10 +60,6 @@ from lms.envs.common import (
 
     # Django REST framework configuration
     REST_FRAMEWORK,
-
-    # the following setting is referenced in a migration in openedx that gets
-    # run under both lms and cms, so it must be available in both places.
-    CREDENTIALS_SERVICE_USERNAME
 )
 from path import Path as path
 from warnings import simplefilter