After fixing [JDK-8181411](https://bugs.openjdk.org/browse/JDK-8181411) (PR: https://github.com/openjdk/jfx/pull/2142), `TreeUtil.getItem(..)` is now unused as it got replaced by a better and faster approach.
So time to clean it up. --------- - [x] I confirm that I make this contribution in accordance with the [OpenJDK Interim AI Policy](https://openjdk.org/legal/ai). ------------- Commit messages: - 8382256: Unused method in TreeUtil can be cleaned up Changes: https://git.openjdk.org/jfx/pull/2189/files Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=2189&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8382256 Stats: 40 lines in 1 file changed: 0 ins; 40 del; 0 mod Patch: https://git.openjdk.org/jfx/pull/2189.diff Fetch: git fetch https://git.openjdk.org/jfx.git pull/2189/head:pull/2189 PR: https://git.openjdk.org/jfx/pull/2189
