[lworld] RFR: 8321941: Migrate test/jdk/valhalla/valuetypes from primitive classes to null-restricted types [v2]

[Mandy Chung]

> Migrate test/jdk/valhalla/valuetypes tests to use null-restricted types instead.

Mandy Chung has updated the pull request incrementally with one additional commit since the last revision:

  Remove @compile

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

Changes:
  - all: https://git.openjdk.org/valhalla/pull/963/files
  - new: https://git.openjdk.org/valhalla/pull/963/files/d8e9e683..d8683abd

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=valhalla&pr=963&range=01
 - incr: https://webrevs.openjdk.org/?repo=valhalla&pr=963&range=00-01

  Stats: 40 lines in 18 files changed: 11 ins; 27 del; 2 mod
  Patch: https://git.openjdk.org/valhalla/pull/963.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/963/head:pull/963

PR: https://git.openjdk.org/valhalla/pull/963