[3.11] Remove draft notice from 3.11 What's new (GH-95713) (#95715)

Co-authored-by: Pablo Galindo Salgado <Pablogsal@gmail.com>

Doc/whatsnew/3.11.rst

@@ -49,13 +49,6 @@ This article explains the new features in Python 3.11, compared to 3.10.
 
 For full details, see the :ref:`changelog <changelog>`.
 
-.. note::
-
-   Prerelease users should be aware that this document is currently in draft
-   form. It will be updated substantially as Python 3.11 moves towards release,
-   so it's worth checking back even after reading earlier versions.
-
-
 Summary -- Release highlights
 =============================