diff -r 69f86b937035 -r 4165cfd67519 mercurial/subrepo.py
--- a/mercurial/subrepo.py	Sat Nov 15 13:50:43 2014 +0900
+++ b/mercurial/subrepo.py	Sat Nov 15 21:36:19 2014 -0500
@@ -501,6 +501,13 @@
     def forget(self, ui, match, prefix):
         return ([], [])
 
+    def removefiles(self, ui, matcher, prefix, after, force, subrepos):
+        """remove the matched files from the subrepository and the filesystem,
+        possibly by force and/or after the file has been removed from the
+        filesystem.  Return 0 on success, 1 on any warning.
+        """
+        return 1
+
     def revert(self, ui, substate, *pats, **opts):
         ui.warn('%s: reverting %s subrepos is unsupported\n' \
             % (substate[0], substate[2]))
@@ -854,6 +861,12 @@
                               os.path.join(prefix, self._path), True)
 
     @annotatesubrepoerror
+    def removefiles(self, ui, matcher, prefix, after, force, subrepos):
+        return cmdutil.remove(ui, self._repo, matcher,
+                              os.path.join(prefix, self._path), after, force,
+                              subrepos)
+
+    @annotatesubrepoerror
     def revert(self, ui, substate, *pats, **opts):
         # reverting a subrepo is a 2 step process:
         # 1. if the no_backup is not set, revert all modified