[lworld] RFR: 8372740: [lworld] tools/javap/4870651/T4870651.java fails with --enable-preview

[Chen Liang]

Fixes the inconsistency observed by @Arraying for this test.

-------------

Commit messages:
 - Remove PL entry
 - 8372740

Changes: https://git.openjdk.org/valhalla/pull/1807/files
  Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=1807&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8372740
  Stats: 22 lines in 3 files changed: 13 ins; 2 del; 7 mod
  Patch: https://git.openjdk.org/valhalla/pull/1807.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1807/head:pull/1807

PR: https://git.openjdk.org/valhalla/pull/1807