--- a/mercurial/subrepo.py Sat Sep 30 07:45:41 2017 -0400+++ b/mercurial/subrepo.py Sat Sep 30 07:45:51 2017 -0400@@ -600,7 +600,6 @@ walk recursively through the directory tree, finding all files matched by the match function '''- pass def forget(self, match, prefix): return ([], [])