Remove unnecessary lint categories from `$DISABLED_WARNINGS` in makefiles. --------- - [x] I confirm that I make this contribution in accordance with the [OpenJDK Interim AI Policy](https://openjdk.org/legal/ai).
------------- Commit messages: - Remove another unused lint category in $DISABLED_WARNINGS. - Remove unnecessary $DISABLED_WARNINGS. Changes: https://git.openjdk.org/jdk/pull/31331/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=31331&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8385660 Stats: 19 lines in 5 files changed: 0 ins; 5 del; 14 mod Patch: https://git.openjdk.org/jdk/pull/31331.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/31331/head:pull/31331 PR: https://git.openjdk.org/jdk/pull/31331
