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

openedx/core/djangoapps/header_control/decorators.py

@@ -2,7 +2,7 @@
 Middleware decorator for removing headers.
 """
 
-from __future__ import absolute_import
+
 
 from functools import wraps
 

openedx/core/djangoapps/header_control/middleware.py

@@ -1,7 +1,7 @@
 """
 Middleware used for adjusting headers in a response before it is sent to the end user.
 """
-from __future__ import absolute_import
+
 
 import six
 

openedx/core/djangoapps/header_control/tests/test_decorators.py

@@ -1,5 +1,5 @@
 """Tests for remove_headers and force_header decorator. """
-from __future__ import absolute_import
+
 
 from django.http import HttpRequest, HttpResponse
 from django.test import TestCase

openedx/core/djangoapps/header_control/tests/test_middleware.py

@@ -1,5 +1,5 @@
 """Tests for header_control middleware."""
-from __future__ import absolute_import
+
 
 from django.http import HttpRequest, HttpResponse
 from django.test import TestCase