[JDK-8373202](https://bugs.openjdk.org/browse/JDK-8373202) added the JDWP ObjectReference.IsSameObject and ObjectRefence.ObjectHashCode commands along with changes in JDI ObjectReference.equals() and ObjectReference.hashCode() to use these new commands. This was needed to work around the possibility of a value object that is referred to by the ObjectReference actually changing due to it being under construction when first accessed. This is no longer the case due to [JDK-8382704](https://bugs.openjdk.org/browse/JDK-8382704), which changes JVMTI to always return a snapshot of the "this" object in an object constructor rather than return the actual object under construction.
--------- - [x] I confirm that I make this contribution in accordance with the [OpenJDK Interim AI Policy](https://openjdk.org/legal/ai). ------------- Commit messages: - Undo 8373202 changes Changes: https://git.openjdk.org/valhalla/pull/2373/files Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=2373&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8383424 Stats: 116 lines in 4 files changed: 4 ins; 111 del; 1 mod Patch: https://git.openjdk.org/valhalla/pull/2373.diff Fetch: git fetch https://git.openjdk.org/valhalla.git pull/2373/head:pull/2373 PR: https://git.openjdk.org/valhalla/pull/2373
