Remove unused import of contextlib for lint

Locked-chess-official · web-flow · commit 1c5c8a07c01e · 2026-06-21T12:11:48.000+08:00
diff --git a/Lib/idlelib/run.py b/Lib/idlelib/run.py
@@ -4,7 +4,6 @@
 f'''{sys.executable} -c "__import__('idlelib.run').run.main()"'''
 '.run' is needed because __import__ returns idlelib, not idlelib.run.
 """
-import contextlib
 import functools
 import io
 import linecache
