bug#70375: 30.0.50; Obsolete certain comint-osc symbols

[Eli Zaretskii]

> Cc: Matthias Meulien <orontee@gmail.com>
> From: Augusto Stoffel <arstoffel@gmail.com>
> Date: Sun, 14 Apr 2024 09:53:46 +0200
> 
> When ansi-osc.el was created, moving code originally in comint.el, the
> variable and function aliases created for backwards compatibility
> purposes were not marked as obsolete.  The attached patch fixes this.

Thanks, installed on the master branch, and closing the bug.

Please in the future make sure to format the commit log messages
according to our conventions.  Commands like "C-x 4 a" can help you do
that.