Remove duplication.
diff --git a/Lib/test/test_urllib2.py b/Lib/test/test_urllib2.py
index 03cd927..83bb0a9 100644
--- a/Lib/test/test_urllib2.py
+++ b/Lib/test/test_urllib2.py
@@ -878,7 +878,7 @@
     def test_http_doubleslash(self):
         # Checks the presence of any unnecessary double slash in url does not
         # break anything. Previously, a double slash directly after the host
-        # could could cause incorrect parsing.
+        # could cause incorrect parsing.
         h = urllib.request.AbstractHTTPHandler()
         o = h.parent = MockOpener()