Backout of [JDK-8299426](https://bugs.openjdk.org/browse/JDK-8299426) fix which causes tier1 failures
Testing in progress ------------- Commit messages: - Revert "8299426: Heap dump does not contain virtual Thread stack references" Changes: https://git.openjdk.org/jdk/pull/17028/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=17028&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8321563 Stats: 319 lines in 3 files changed: 81 ins; 155 del; 83 mod Patch: https://git.openjdk.org/jdk/pull/17028.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/17028/head:pull/17028 PR: https://git.openjdk.org/jdk/pull/17028
