Revert copy_reg -> copyreg rename.
diff --git a/Lib/test/test_py3kwarn.py b/Lib/test/test_py3kwarn.py
index 0641f7d..ece38ec 100644
--- a/Lib/test/test_py3kwarn.py
+++ b/Lib/test/test_py3kwarn.py
@@ -215,7 +215,7 @@
 
 class TestStdlibRenames(unittest.TestCase):
 
-    renames = {'copy_reg': 'copyreg', 'Queue': 'queue',
+    renames = {'Queue': 'queue',
                'SocketServer': 'socketserver',
                'ConfigParser': 'configparser',
                'repr': 'reprlib'}