[lworld] RFR: 8286864: [lworld] runtime/valhalla/inlinetypes/testSupers/TestSuperClasses.java refers to IdentityObject interface

[David Simms]

Removed IdentityObject and realigned access flags

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Commit messages:
 - 8286864: [lworld] runtime/valhalla/inlinetypes/testSupers/TestSuperClasses.java refers to IdentityObject interface

Changes: https://git.openjdk.java.net/valhalla/pull/689/files
 Webrev: https://webrevs.openjdk.java.net/?repo=valhalla&pr=689&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8286864
  Stats: 875 lines in 4 files changed: 0 ins; 856 del; 19 mod
  Patch: https://git.openjdk.java.net/valhalla/pull/689.diff
  Fetch: git fetch https://git.openjdk.java.net/valhalla pull/689/head:pull/689

PR: https://git.openjdk.java.net/valhalla/pull/689