--- a/mercurial/revlogutils/constants.py	Sun Feb 20 15:18:15 2022 -0700
+++ b/mercurial/revlogutils/constants.py	Thu Mar 03 17:34:00 2022 +0100
@@ -7,7 +7,6 @@
 # GNU General Public License version 2 or any later version.
 """Helper class to compute deltas stored inside revlogs"""
 
-from __future__ import absolute_import
 
 import struct