[lworld] RFR: 8343408: TestJNIIsSameObject should be run on all platforms

[Alex Menkov]

The fix drops the test requirements to run it on all platforms

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Commit messages:
 - fix

Changes: https://git.openjdk.org/valhalla/pull/1292/files
  Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=1292&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8343408
  Stats: 6 lines in 2 files changed: 0 ins; 6 del; 0 mod
  Patch: https://git.openjdk.org/valhalla/pull/1292.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1292/head:pull/1292

PR: https://git.openjdk.org/valhalla/pull/1292