[JDK-8248675](https://bugs.openjdk.org/browse/JDK-8248675) no longer seems to be reproducing, even before [JDK-8313800](https://bugs.openjdk.org/browse/JDK-8313800) was just pushed. I'm not sure what may have fixed it, but even if the bug was potentially still there, it has likely been fixed by [JDK-8313800](https://bugs.openjdk.org/browse/JDK-8313800). `serviceability/sa/TestJhsdbJstackMixed.java` should be removed from the problem list.
------------- Commit messages: - remove from problem list Changes: https://git.openjdk.org/jdk/pull/15696/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=15696&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8316147 Stats: 2 lines in 1 file changed: 0 ins; 2 del; 0 mod Patch: https://git.openjdk.org/jdk/pull/15696.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/15696/head:pull/15696 PR: https://git.openjdk.org/jdk/pull/15696
