--- a/contrib/showstack.py	Sun Feb 20 15:18:15 2022 -0700
+++ b/contrib/showstack.py	Thu Mar 03 17:34:00 2022 +0100
@@ -4,7 +4,6 @@
 r"""dump stack trace when receiving SIGQUIT (Ctrl-\) or SIGINFO (Ctrl-T on BSDs)
 """
 
-from __future__ import absolute_import, print_function
 import signal
 import sys
 import traceback