RFR: 8351995: JFR: Leftovers from removal of Security Manager

[Erik Gahlin]

Could I have a review of a PR that removes leftovers from the removal of the Security Manager.

Testing: jdk/jdk/jfr + tier1

Thanks
Erik

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Commit messages:
 - Log exception on exit
 - Initial

Changes: https://git.openjdk.org/jdk/pull/24044/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=24044&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8351995
  Stats: 129 lines in 7 files changed: 0 ins; 127 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/24044.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24044/head:pull/24044

PR: https://git.openjdk.org/jdk/pull/24044