diff -r 50d11dd8ac02 -r 86db5cb55d46 mercurial/httpclient/__init__.py
--- a/mercurial/httpclient/__init__.py	Sun Apr 10 21:32:08 2016 +0000
+++ b/mercurial/httpclient/__init__.py	Sun Apr 10 20:55:37 2016 +0000
@@ -41,7 +41,6 @@
 # Many functions in this file have too many arguments.
 # pylint: disable=R0913
 
-import cStringIO
 import errno
 import httplib
 import logging