[lworld] RFR: 8374024: [lworld] Follow-up cleanups from JDK-8228361

[Tobias Hartmann]

Cleanups suggested by @mhaessig in https://github.com/openjdk/valhalla/pull/1823.

Thanks,
Tobias

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Commit messages:
 - 8374024: [lworld] Follow-up cleanups from JDK-8228361

Changes: https://git.openjdk.org/valhalla/pull/2059/files
  Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=2059&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8374024
  Stats: 132 lines in 4 files changed: 61 ins; 51 del; 20 mod
  Patch: https://git.openjdk.org/valhalla/pull/2059.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/2059/head:pull/2059

PR: https://git.openjdk.org/valhalla/pull/2059