buildfix: update texinfo menu

Build error message:
qemu-doc.texi:34: node `Top' lacks menu item for `Recently removed features' despite being its Up target

Fixes: 3264ffc ("dirty-bitmaps: remove deprecated autoload parameter")
Signed-off-by: Gerd Hoffmann <[email protected]>
Reviewed-by: Philippe Mathieu-Daudé <[email protected]>
Reviewed-by: John Snow <[email protected]>
Reviewed-by: Markus Armbruster <[email protected]>
Tested-by: Laszlo Ersek <[email protected]>
Message-id: [email protected]
Signed-off-by: Peter Maydell <[email protected]>

Author: kraxel

qemu-doc.texi

@@ -44,6 +44,7 @@
 * Security::
 * Implementation notes::
 * Deprecated features::
+* Recently removed features::
 * Supported build platforms::
 * License::
 * Index::