hgext/narrow/narrowbundle2.py

--- a/hgext/narrow/narrowbundle2.py	Thu Dec 06 10:15:41 2018 -0800
+++ b/hgext/narrow/narrowbundle2.py	Sat Dec 08 23:04:11 2018 -0800
@@ -183,8 +183,6 @@
         class dummybmstore(dict):
             def applychanges(self, repo, tr, changes):
                 pass
-            def recordchange(self, tr): # legacy version
-                pass
         repo._bookmarks = dummybmstore()
         chgrpfile = repair.strip(op.ui, repo, list(clkills), backup=True,
                                  topic='widen')