[lworld] RFR: [lworld] Remove LockingMode from test

[Coleen Phillimore]

See issue - the LockingMode flags will be removed in mainline, so adjusting this test.
Tested with the test.

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Commit messages:
 - [lworld] Remove LockingMode from test

Changes: https://git.openjdk.org/valhalla/pull/1495/files
  Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=1495&range=00
  Stats: 18 lines in 1 file changed: 0 ins; 16 del; 2 mod
  Patch: https://git.openjdk.org/valhalla/pull/1495.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1495/head:pull/1495

PR: https://git.openjdk.org/valhalla/pull/1495