pycompat: drop the pickle import
I suspect this is what
df56e6bd37f6 meant to eliminate.
Differential Revision: https://phab.mercurial-scm.org/D12420
--- a/mercurial/pycompat.py Tue Mar 29 22:22:36 2022 -0400
+++ b/mercurial/pycompat.py Tue Mar 29 23:34:18 2022 -0400
@@ -20,7 +20,6 @@
import io
import json
import os
-import pickle
import queue
import shlex
import socketserver