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

[Hans-Peter Nilsson]

> From: Hans-Peter Nilsson <hp@axis.com>
> Content-Type: text/plain; charset="iso-8859-1"

For transparency and closure:

> I just don't get how those remaining
> config/cpu/*/atomicity.h files can be reached, considering
> that config/cpu/cris/atomicity.h was not compiled for no
> obvious reason.  But, I also don't see the latter file
> wasn't compiled.  I'll have to check myself, I can't let go
> of this.

A-ha, you *added* a use in r16-3810-g6456da6bab8a2c; the
"regressing" commit!  My POC-proving-not-being-compiled
patch in PR122172 was checked against r16-3809 when it was
indeed not compiled.

The commit-date for r16-3810-g6456da6bab8a2c seems to be
"Thu Jul 17 22:02:45 2025 +0100", unexpectedly much earlier
than 2025-09-12 when my autester started screaming.  Not
wrong, but made me think I fumble-fingered and was looking
at the wrong revision.

brgds, H-P