merge 3.2
diff --git a/Lib/threading.py b/Lib/threading.py
index e85e269..2a0d8ad 100644
--- a/Lib/threading.py
+++ b/Lib/threading.py
@@ -5,7 +5,6 @@
 
 from time import time as _time, sleep as _sleep
 from traceback import format_exc as _format_exc
-from collections import deque
 from _weakrefset import WeakSet
 
 # Note regarding PEP 8 compliant names