bug#71736: Small cleanup patches for lua-ts-mode

[Stefan Kangas]

john muhl <jm@pub.pink> writes:

> From abecae7d631f4b313fe8510f47e480f1a82bb4ad Mon Sep 17 00:00:00 2001
> From: john muhl <jm@pub.pink>
> Date: Thu, 13 Jun 2024 15:19:04 -0500
> Subject: [PATCH 4/4] ; Remove useless require of 'rx' in 'lua-ts-mode'
>
> * lisp/progmodes/lua-ts-mode.el: No need to require 'rx' since it
> is preloaded.  (bug#71736)

I don't think "rx" is preloaded.  In emacs -Q, (featurep 'rx) is nil.