diff --git a/mercurial/dirstate.py b/mercurial/dirstate.py
--- a/mercurial/dirstate.py
+++ b/mercurial/dirstate.py
@@ -344,9 +344,6 @@
 
     iteritems = items
 
-    def directories(self):
-        return self._map.directories()
-
     def parents(self):
         return [self._validate(p) for p in self._pl]
 
diff --git a/mercurial/dirstatemap.py b/mercurial/dirstatemap.py
--- a/mercurial/dirstatemap.py
+++ b/mercurial/dirstatemap.py
@@ -700,9 +700,6 @@
         def copymap(self):
             return self._rustmap.copymap()
 
-        def directories(self):
-            return self._rustmap.directories()
-
         def debug_iter(self):
             return self._rustmap.debug_iter()