[jdk24u] RFR: 8349375: Cleanup AIX special file build settings

[Matthias Baesken]

8349375: Cleanup AIX special file build settings

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Commit messages:
 - Backport 006ed5c02b47d12fdcc070f50cfeb77d5c158bca

Changes: https://git.openjdk.org/jdk24u/pull/123/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk24u&pr=123&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8349375
  Stats: 7 lines in 1 file changed: 0 ins; 7 del; 0 mod
  Patch: https://git.openjdk.org/jdk24u/pull/123.diff
  Fetch: git fetch https://git.openjdk.org/jdk24u.git pull/123/head:pull/123

PR: https://git.openjdk.org/jdk24u/pull/123