diff -r a9d5f67c7a6e -r 96025d1e184f mercurial/context.py
--- a/mercurial/context.py	Thu Aug 15 15:13:14 2013 -0500
+++ b/mercurial/context.py	Wed May 28 20:03:19 2014 -0500
@@ -1578,8 +1578,6 @@
             self._text = editor(self._repo, self, [])
             self._repo.savecommitmessage(self._text)
 
-    def unknown(self):
-        return self._status[4]
     def ignored(self):
         return self._status[5]
     def clean(self):