RFR: 8335479: JFR: Missing documentation for -XX:StartFlightRecording

[Erik Gahlin]

Could I have a review of updates to the -XX:StartFlightRecording option for JFR.

Testing: tier1

Thanks
Erik

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Commit messages:
 - Remove accidentally added file
 - Initial

Changes: https://git.openjdk.org/jdk/pull/19992/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=19992&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8335479
  Stats: 8 lines in 1 file changed: 7 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/19992.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/19992/head:pull/19992

PR: https://git.openjdk.org/jdk/pull/19992