simplify comment for 35-20142.patch

components/python/python-312/patches/35-20142.patch

@@ -1,34 +1,20 @@
-Note: this patch was manually edited to remove two changes to the
-SubprocessWatcherMixin.tearDown() method found in
-Lib/test/test_asyncio/test_subprocess.py; the first change moved the
-super() call to the end of that function, while the second reverted
-the first change, resulting in no net change to the file.
+Fix for https://github.com/python/cpython/issues/82504
 
-The function being patched was changed between Python 3.9 and 3.12
-such that the first patch failed to apply.
+This patches MultiLoopChildWatcher, which was deprecated in Python
+3.12 and is scheduled for removal in Python 3.14.  The patch was not
+accepted upstream but it seems to have worked for us and has been in
+our Python 3.9 without complaints.
+
+Deprecation PR: https://github.com/python/cpython/pull/98089
+
+The patch is originally from:
 
-From 5d1013256c133b61587b6a80a0f9d509ac11d123 Mon Sep 17 00:00:00 2001
 From: Chris Jerdonek <[email protected]>
 Date: Sat, 16 May 2020 15:57:27 -0700
 Subject: [PATCH 1/5] bpo-38323: Fix rare MultiLoopChildWatcher hangs.
 
-This changes asyncio.MultiLoopChildWatcher's attach_loop() method
-to call loop.add_signal_handler() instead of calling only
-signal.signal().  This should eliminate some rare hangs since
-loop.add_signal_handler() calls signal.set_wakeup_fd().  Without
-this, the main thread sometimes wasn't getting awakened if a
-signal occurred during an await.
----
- Doc/library/asyncio-eventloop.rst             |  4 ++-
- Doc/library/asyncio-policy.rst                | 13 ++++++-
- Lib/asyncio/unix_events.py                    | 34 ++++++++++++++-----
- Lib/test/test_asyncio/test_subprocess.py      |  3 +-
- .../2020-05-16-17-50-10.bpo-38323.Ar35np.rst  |  2 ++
- 5 files changed, 44 insertions(+), 12 deletions(-)
- create mode 100644 Misc/NEWS.d/next/Library/2020-05-16-17-50-10.bpo-38323.Ar35np.rst
-
---- Python-3.12.1/Lib/asyncio/unix_events.py.orig
-+++ Python-3.12.1/Lib/asyncio/unix_events.py
+--- Python-3.12.2/Lib/asyncio/unix_events.py.orig
++++ Python-3.12.2/Lib/asyncio/unix_events.py
 @@ -88,6 +88,8 @@
      def add_signal_handler(self, sig, callback, *args):
          """Add a handler for a signal.  UNIX only.