gh-146527: Remove private module entry from what's new (#149284)

Remove private module entry from what's new

Author: pablogsal

Doc/whatsnew/3.15.rst

@@ -700,16 +700,6 @@ arguments (:pep:`791`).
 Improved modules
 ================
 
-_remote_debugging
------------------
-
-* Added :class:`!GCMonitor` and :func:`!get_gc_stats` to the
-  :mod:`!_remote_debugging` module to read garbage collection statistics
-  from a running Python process without constructing a :class:`!RemoteUnwinder`.
-  Results are returned as :class:`!GCStatsInfo` objects.
-  (Contributed by Sergey Miryanov and Pablo Galindo in :gh:`146527`.)
-
-
 argparse
 --------