RFR: 8319647: Update or mark as vm.flagless tests that ignore external VM flags

[Darragh Clarke]

Updated tests to use vm.flagless as they already ignore Vm flags

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Commit messages:
 - ignore vm flags

Changes: https://git.openjdk.org/jdk/pull/16946/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=16946&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8319647
  Stats: 14 lines in 7 files changed: 7 ins; 0 del; 7 mod
  Patch: https://git.openjdk.org/jdk/pull/16946.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/16946/head:pull/16946

PR: https://git.openjdk.org/jdk/pull/16946