[lworld] RFR: 8336141: [lworld] Remove remains of java.lang.NonTearable support [v2]

[Frederic Parain]

> Code cleanup, and test upgrade to work with the JEP 401 model.

Frederic Parain has updated the pull request incrementally with one additional commit since the last revision:

  Fix comment

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Changes:
  - all: https://git.openjdk.org/valhalla/pull/1165/files
  - new: https://git.openjdk.org/valhalla/pull/1165/files/6676a45c..3d6ef5e4

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=valhalla&pr=1165&range=01
 - incr: https://webrevs.openjdk.org/?repo=valhalla&pr=1165&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/valhalla/pull/1165.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1165/head:pull/1165

PR: https://git.openjdk.org/valhalla/pull/1165