bug#73257: 31.0.50; Deleting obsolete libraries in Emacs 31

[Eli Zaretskii <eliz@gnu.org>]

> From: Stefan Kangas <stefankangas@gmail.com>
> Date: Sat, 14 Sep 2024 12:25:49 -0700
> 
>     24.1 lisp/obsolete/pgg-def.el
>     24.1 lisp/obsolete/pgg-gpg.el
>     24.1 lisp/obsolete/pgg-parse.el
>     24.1 lisp/obsolete/pgg-pgp.el
>     24.1 lisp/obsolete/pgg-pgp5.el
>     24.1 lisp/obsolete/pgg.el
>     24.3 lisp/obsolete/bruce.el
>     24.4 lisp/obsolete/info-edit.el
>     24.4 lisp/obsolete/iswitchb.el
>     24.4 lisp/obsolete/longlines.el
>     24.4 lisp/obsolete/meese.el
>     24.4 lisp/obsolete/otodo-mode.el
>     24.4 lisp/obsolete/rcompile.el
>     24.4 lisp/obsolete/sup-mouse.el
>     24.4 lisp/obsolete/terminal.el
>     24.4 lisp/obsolete/yow.el
>     24.5 lisp/obsolete/cc-compat.el
>     24.5 lisp/obsolete/crisp.el
>     24.5 lisp/obsolete/tpu-edt.el
>     24.5 lisp/obsolete/tpu-extras.el
>     24.5 lisp/obsolete/tpu-mapper.el
>     24.5 lisp/obsolete/vi.el
>     24.5 lisp/obsolete/vip.el
>     24.5 lisp/obsolete/ws-mode.el
> 
> 1. We cannot yet remove iswitchb.el, as isearchb.el depends on it (see
>    Bug#36260).
> 
> 2. We also cannot remove longlines.el, as so-long.el depends on it, and
>    even recommends it in certain cases.
> 
> 3. ISTR that Eli objected to removing bruce.el in Emacs 30, so I'm
>    assuming this objection this still stands.
> 
> Are there any other blockers or considerations?

I'd leave the TPU and Crisp/Brief emulations alone.