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

lms/djangoapps/instructor_task/models.py

@@ -12,7 +12,7 @@ file and check it in at the same time as your model changes. To do that,
 ASSUMPTIONS: modules have unique IDs, even across different module_types
 
 """
-from __future__ import absolute_import
+
 
 import codecs
 import csv