--- a/mercurial/obsolete.py	Thu Aug 21 10:07:30 2014 -0400
+++ b/mercurial/obsolete.py	Tue Aug 19 16:46:17 2014 -0700
@@ -280,7 +280,6 @@
         # caches for various obsolescence related cache
         self.caches = {}
         self._all = []
-        # new markers to serialize
         self.precursors = {}
         self.successors = {}
         self.sopener = sopener