[master] RFR: 8302065: [Lilliput] Cleanups and touch-ups

[Roman Kennke]

Lilliput accumulated a couple of superfluous changes and could need some minor improvements.

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Commit messages:
 - 8302065: [Lilliput] Cleanups and touch-ups

Changes: https://git.openjdk.org/lilliput/pull/73/files
 Webrev: https://webrevs.openjdk.org/?repo=lilliput&pr=73&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8302065
  Stats: 41 lines in 14 files changed: 6 ins; 19 del; 16 mod
  Patch: https://git.openjdk.org/lilliput/pull/73.diff
  Fetch: git fetch https://git.openjdk.org/lilliput pull/73/head:pull/73

PR: https://git.openjdk.org/lilliput/pull/73