diff -r 6ccb07b9eeeb -r 83ce99f5e7f2 mercurial/revlog.py
--- a/mercurial/revlog.py	Tue Oct 10 10:02:53 2023 +0200
+++ b/mercurial/revlog.py	Tue Oct 10 10:03:01 2023 +0200
@@ -630,10 +630,6 @@
 
         if b'maxchainlen' in opts:
             self.delta_config.max_chain_len = opts[b'maxchainlen']
-        if b'lazydelta' in opts:
-            self.delta_config.lazy_delta = bool(opts[b'lazydelta'])
-        if self._lazydelta and b'lazydeltabase' in opts:
-            self.delta_config.lazy_delta_base = opts[b'lazydeltabase']
         if b'compengine' in opts:
             self.feature_config.compression_engine = opts[b'compengine']
         comp_engine_opts = self.feature_config.compression_engine_options