# HG changeset patch
# User Matt Harbison <matt_harbison@yahoo.com>
# Date 1670968127 18000
# Node ID c43b283a19c3d3dc610677e0b1eafcae2dca03bc
# Parent  de284a0b5614789f107dfa6364175d4f97440f8b
windows: drop an unused method

The only caller was removed in 563eb25e079b.

diff -r de284a0b5614 -r c43b283a19c3 mercurial/windows.py
--- a/mercurial/windows.py	Mon Dec 12 14:10:12 2022 -0500
+++ b/mercurial/windows.py	Tue Dec 13 16:48:47 2022 -0500
@@ -183,14 +183,6 @@
 listdir = osutil.listdir
 
 
-# copied from .utils.procutil, remove after Python 2 support was dropped
-def _isatty(fp):
-    try:
-        return fp.isatty()
-    except AttributeError:
-        return False
-
-
 def get_password():
     """Prompt for password with echo off, using Windows getch().