libc++: Remove old PSTL defines from __config_site

Post-roll follow-up to
https://chromium-review.googlesource.com/c/chromium/src/+/5536733

No behavior change.

Bug: 333609032
Change-Id: Ife03b29591247dc68784e292cac5d3beb45066db
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5688957
Commit-Queue: Hans Wennborg <hans@chromium.org>
Auto-Submit: Nico Weber <thakis@chromium.org>
Commit-Queue: Nico Weber <thakis@chromium.org>
Reviewed-by: Hans Wennborg <hans@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1325713}
NOKEYCHECK=True
GitOrigin-RevId: 4720b7a8aed3c7d07f239413414f8f98a6bfaf06
1 file changed