[jdk21u-dev] RFR: 8362533: Tests sun/management/jmxremote/bootstrap/* duplicate VM flags

[Rui Li]

Backport for parity with oracle. This patch removes duplicate vm flags. A clean backport.

Tests are running

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Commit messages:
 - Backport 458f033d4dd3c646028b2f9bab88f9a308cad4af

Changes: https://git.openjdk.org/jdk21u-dev/pull/2314/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=2314&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8362533
  Stats: 21 lines in 3 files changed: 0 ins; 17 del; 4 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/2314.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/2314/head:pull/2314

PR: https://git.openjdk.org/jdk21u-dev/pull/2314