Remove obsolete/duplicate entries

Misc/NEWS

@@ -283,8 +283,6 @@ Core and Builtins
 - Issue #11320: fix bogus memory management in Modules/getpath.c, leading to
   a possible crash when calling Py_SetPath().
 
-- _ast.__version__ is now a Mercurial hex revision.
-
 - Issue #11432: A bug was introduced in subprocess.Popen on posix systems with
   3.2.0 where the stdout or stderr file descriptor being the same as the stdin
   file descriptor would raise an exception. webbrowser.open would fail. fixed.
@@ -1542,8 +1540,6 @@ Extension Modules
   signature.  Without this, architectures where sizeof void* != sizeof int are
   broken.  Patch given by Hallvard B Furuseth.
 
-- Issue #12221: Replace pyexpat.__version__ with the Python version.
-
 - Issue #12051: Fix segfault in json.dumps() while encoding highly-nested
   objects using the C accelerations.