--- a/mercurial/revset.py	Fri Oct 03 01:24:30 2014 -0500
+++ b/mercurial/revset.py	Fri Oct 03 01:25:35 2014 -0500
@@ -2462,9 +2462,6 @@
             return None
         return lambda: self._iterfilter(it())
 
-    def __add__(self, x):
-        return _addset(self, x)
-
     def __nonzero__(self):
         for r in self:
             return True