diff -r b41d023a412a -r 0a5b20c107a6 tests/simplestorerepo.py
--- a/tests/simplestorerepo.py	Thu Aug 09 16:02:14 2018 -0700
+++ b/tests/simplestorerepo.py	Thu Aug 09 16:11:24 2018 -0700
@@ -105,7 +105,6 @@
 
         # This is used by changegroup code :/
         self._generaldelta = True
-        self.storedeltachains = False
 
         self.version = 1