[lworld] RFR: 8370509: [lworld] EnableValhalla is not needed for sync

[Coleen Phillimore]

I took out EnableValhalla as a conditional test in the ObjectSynchronizer code.  If the inline type bit is set in the markWord or the klass is InlineKlass, we can't synchronize on the object.
I added a test but it was sort of a duplicate of all runtime/valhalla/inlinetypes/MonitorEnterTest.java and duplicates all tests that do locking so I didn't add a test.
Testing with tier1-4, still in progress.

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Commit messages:
 - 8370509: [lworld] EnableValhalla is not needed for sync

Changes: https://git.openjdk.org/valhalla/pull/1699/files
  Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=1699&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8370509
  Stats: 18 lines in 3 files changed: 0 ins; 3 del; 15 mod
  Patch: https://git.openjdk.org/valhalla/pull/1699.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1699/head:pull/1699

PR: https://git.openjdk.org/valhalla/pull/1699