[PATCH 08 of 18 V2] localrepo: drop `_cacheabletip` method

[Pierre-Yves David]

# HG changeset patch
# User Pierre-Yves David <pierre-yves.david at ens-lyon.org>
# Date 1357259858 -3600
# Node ID f33473072cb625b64b9ded2d4eb054f42c735a6c
# Parent  4e5577b9b1c9e3582e7cf362cce5d3a7d454f821
localrepo: drop `_cacheabletip` method

It iss dead code now.

diff --git a/mercurial/localrepo.py b/mercurial/localrepo.py
--- a/mercurial/localrepo.py
+++ b/mercurial/localrepo.py
@@ -648,22 +648,10 @@ class localrepository(object):
         for bookmark, n in self._bookmarks.iteritems():
             if n == node:
                 marks.append(bookmark)
         return sorted(marks)
 
-    def _cacheabletip(self):
-        """tip-most revision stable enought to used in persistent cache
-
-        This function is overwritten by MQ to ensure we do not write cache for
-        a part of the history that will likely change.
-
-        Efficient handling of filtered revision in branchcache should offer a
-        better alternative. But we are using this approach until it is ready.
-        """
-        cl = self.changelog
-        return cl.rev(cl.tip())
-
     def branchmap(self):
         '''returns a dictionary {branch: [branchheads]}'''
         if self.filtername and not self.changelog.filteredrevs:
             return self.unfiltered().branchmap()
         branchmap.updatecache(self)