changeset 22753:16c20403de80

_orderedsetmixin: drop this now unused class

All my friends are dead.

--- a/mercurial/revset.py	Thu Oct 02 19:47:33 2014 -0500
+++ b/mercurial/revset.py	Thu Oct 02 19:48:14 2014 -0500
@@ -2384,37 +2384,6 @@
         This is part of the mandatory API for smartset."""
         return filteredset(self, condition)
 
-class _orderedsetmixin(object):
-    """Mixin class with utility methods for smartsets
-
-    This should be extended by smartsets which have the isascending(),
-    isdescending() and reverse() methods"""
-
-    def _first(self):
-        """return the first revision in the set"""
-        for r in self:
-            return r
-        raise ValueError('arg is an empty sequence')
-
-    def _last(self):
-        """return the last revision in the set"""
-        self.reverse()
-        m = self._first()
-        self.reverse()
-        return m
-
-    def min(self):
-        """return the smallest element in the set"""
-        if self.isascending():
-            return self._first()
-        return self._last()
-
-    def max(self):
-        """return the largest element in the set"""
-        if self.isascending():
-            return self._last()
-        return self._first()
-
 class filteredset(abstractsmartset):
     """Duck type for baseset class which iterates lazily over the revisions in
     the subset and contains a function which tests for membership in the