[lworld] RFR: 8373844: [lworld] Un-problem list ScalarReplacementWithGCBarrierTests.java

[Marc Chevalier]

It was previously fixed in JDK-8372697.

But I've rested after the fateful removal of EnableValhalla, and it seems to pass. Let's just un-problem list.

Thanks,
Marc

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Commit messages:
 - Un-problemlist

Changes: https://git.openjdk.org/valhalla/pull/1816/files
  Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=1816&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8373844
  Stats: 1 line in 1 file changed: 0 ins; 1 del; 0 mod
  Patch: https://git.openjdk.org/valhalla/pull/1816.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1816/head:pull/1816

PR: https://git.openjdk.org/valhalla/pull/1816