diff -r f636103c4d67 -r 861fe9273d57 mercurial/interfaces/repository.py
--- a/mercurial/interfaces/repository.py	Tue Oct 10 10:56:42 2023 +0200
+++ b/mercurial/interfaces/repository.py	Tue Oct 10 10:58:28 2023 +0200
@@ -1229,13 +1229,6 @@
         """
     )
 
-    _generaldelta = interfaceutil.Attribute(
-        """Whether generaldelta storage is being used.
-
-        TODO this is revlog specific and should not be exposed.
-        """
-    )
-
     fulltextcache = interfaceutil.Attribute(
         """Dict with cache of fulltexts.