diff --git a/scrapy/contrib/downloadermiddleware/cookies.py b/scrapy/contrib/downloadermiddleware/cookies.py
index 557568151..09eb18ece 100644
--- a/scrapy/contrib/downloadermiddleware/cookies.py
+++ b/scrapy/contrib/downloadermiddleware/cookies.py
@@ -1,5 +1,3 @@
-import operator
-from itertools import groupby
 from collections import defaultdict
 from scrapy.xlib.pydispatch import dispatcher