Farewell to Bram and dedicate upcoming Vim 9.1 to him (#12749)

* Dedicate upcoming Vim 9.1 to Bram

Also replace in a few more places Brams email address and mention new
maintainers.

* Remove Bram from any Maintainer role

* runtime: Align Header

* it's mailing list not mailinglist
diff --git a/runtime/delmenu.vim b/runtime/delmenu.vim
index ef663c7..b614851 100644
--- a/runtime/delmenu.vim
+++ b/runtime/delmenu.vim
@@ -1,8 +1,9 @@
 " This Vim script deletes all the menus, so that they can be redefined.
 " Warning: This also deletes all menus defined by the user!
 "
-" Maintainer:	Bram Moolenaar <Bram@vim.org>
-" Last Change:	2019 Dec 10
+" Maintainer:	The Vim Project <https://github.com/vim/vim>
+" Last Change:	2023 Aug 10
+" Former Maintainer:	Bram Moolenaar <Bram@vim.org>
 
 aunmenu *
 tlunmenu *