[PATCH] libstdc++: Remove unused config/cpu/i486/atomicity.h file [PR122172]

[Jonathan Wakely]

On Tue, 7 Oct 2025 at 17:29, Hans-Peter Nilsson <hp@axis.com> wrote:
>
> > From: Jonathan Wakely <jwakely@redhat.com>
>
> > This file is no longer used, because we always use the definitions in
> > config/cpu/generic/atomicity_builtins/atomicity.h now.
> >
> > HP confirmed that the code generated by __atomic_fetch_add is fine and
> > we don't need the handwritten assembly.
>
> Right, just please s/i486/CRIS/ in the subject.

Doh! I'm also planning to remove config/cpu/i486/atomicity.h which is
also unused, and I reused the commit message.

I'll fix it before pushing, thanks.