Run 2to3 -f future . -w

This will remove imports from __future__ that are no longer needed.

https://docs.python.org/3.5/library/2to3.html#2to3fixer-future

common/djangoapps/static_replace/admin.py

@@ -2,7 +2,7 @@
 Django admin page for AssetBaseUrlConfig, which allows you to set the base URL
 that gets prepended to asset URLs in order to serve them from, say, a CDN.
 """
-from __future__ import absolute_import
+
 
 from config_models.admin import ConfigurationModelAdmin
 from django.contrib import admin