--- a/build/compare-mozconfig/compare-mozconfigs-wrapper.py
+++ b/build/compare-mozconfig/compare-mozconfigs-wrapper.py
@@ -3,17 +3,16 @@
 # 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 unicode_literals
 
 import logging
 import mozunit
 import subprocess
-import sys
 import unittest
 
 from os import path
 from buildconfig import substs
 
 log = logging.getLogger(__name__)
 
 def determine_platform():

--- a/build/compare-mozconfig/compare-mozconfigs.py
+++ b/build/compare-mozconfig/compare-mozconfigs.py
@@ -3,18 +3,16 @@
 # 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/.
 
 # originally from https://hg.mozilla.org/build/tools/file/4ab9c1a4e05b/scripts/release/compare-mozconfigs.py
 
 from __future__ import unicode_literals
 
 import logging
-import os
-import site
 import sys
 import urllib2
 import difflib
 
 FAILURE_CODE = 1
 SUCCESS_CODE = 0
 
 log = logging.getLogger(__name__)