From: Alexandre Detiste <tchet@debian.org>
Subject: remove trivial usage of python3-mock
Forwarded: https://github.com/xolox/python-humanfriendly/issues/62

--- a/humanfriendly/tests.py
+++ b/humanfriendly/tests.py
@@ -123,7 +123,7 @@
 )
 
 # Test dependencies.
-from mock import MagicMock
+from unittest.mock import MagicMock
 
 
 class HumanFriendlyTestCase(TestCase):