RFR: 8376281: Remove USE_XLC_BUILTINS macro usage in AIX code

[Martin Doerr]

On Mon, 26 Jan 2026 09:23:33 GMT, Matthias Baesken <mbaesken at openjdk.org> wrote:

> There are a few usages of USE_XLC_BUILTINS left in the AIX hotspot coding. But they are obsolete these days. Most were removed already but the few remaining can be removed too.

Looks good and trivial. Thanks for cleaning this up!

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Marked as reviewed by mdoerr (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/29408#pullrequestreview-3705259325