Add deprecation decorator and comments for pywin32 (#11570)

Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>

stubs/pywin32/@tests/stubtest_allowlist_win32.txt

@@ -48,11 +48,8 @@ win32com(ext)?.axscript.client.debug
 win32com(ext)?.axscript.client.pydumper
 win32com(ext)?.directsound.test.*
 
-# Deprecated and obsolete
-pythoncom.MakeIID
-pythoncom.MakeTime
-(win32.lib.)?win32pdhquery.Query.addperfcounter
 # Deprecated and makes a buffer of random junk. Use something like `b"\x00" * bufferSize` instead
+# It's safer to not even expose this method as deprecated.
 (win32.)?win(32|xp)gui.PyMakeBuffer
 
 # Axdebug is not built on Python 3.11 anyway: https://github.com/mhammond/pywin32/blob/main/setup.py#L403-L405