--- a/python/mozbuild/mozbuild/backend/common.py
+++ b/python/mozbuild/mozbuild/backend/common.py
@@ -2,17 +2,16 @@
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 from __future__ import absolute_import, unicode_literals
 
 import itertools
 import json
 import os
-import re
 
 import mozpack.path as mozpath
 import mozwebidlcodegen
 
 from mozbuild.backend.base import BuildBackend
 
 from mozbuild.frontend.context import (
     Context,

--- a/python/mozbuild/mozbuild/backend/recursivemake.py
+++ b/python/mozbuild/mozbuild/backend/recursivemake.py
@@ -2,17 +2,16 @@
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 from __future__ import absolute_import, unicode_literals
 
 import logging
 import os
 import re
-import types
 
 from collections import (
     defaultdict,
     namedtuple,
 )
 from StringIO import StringIO
 from itertools import chain