<i18n dev> RFR: JDK-8320714: java/util/Locale/LocaleProvidersRun.java and java/util/ResourceBundle/modules/visibility/VisibilityTest.java timeout after passing

[Justin Lu]

Please review this PR which fixes timeouts for the two tests: _java/util/Locale/LocaleProvidersRun.java_ and _java/util/ResourceBundle/modules/visibility/VisibilityTest.java_.

These tests were updated to accept VM flags in [JDK-8319569](https://bugs.openjdk.org/browse/JDK-8319569), which is now causing timeouts in tiers 6 and 8. One set of VM flags causes _VisibilityTest.java_ to timeout with a duration of over 2 hours in tier6.

Both have been updated to run without VM flags and marked as `vm.flagless`.

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Commit messages:
 - init

Changes: https://git.openjdk.org/jdk/pull/16831/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=16831&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8320714
  Stats: 4 lines in 2 files changed: 2 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/16831.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/16831/head:pull/16831

PR: https://git.openjdk.org/jdk/pull/16831