RFR: 8316628: [lw5] remove vnew, aconst_init, and withfield [v2]

[Vicente Romero]

> This PR is removing bytecods vnew, aconst_init, and withfield. Some tests will have to be ignored as for them to pass some changes need to be made to the verifier which still expects value classes to have factory methods (vnew)

Vicente Romero has updated the pull request incrementally with one additional commit since the last revision:

  ignoring failing tests

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

Changes:
  - all: https://git.openjdk.org/valhalla/pull/934/files
  - new: https://git.openjdk.org/valhalla/pull/934/files/58fe0044..9681a053

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=valhalla&pr=934&range=01
 - incr: https://webrevs.openjdk.org/?repo=valhalla&pr=934&range=00-01

  Stats: 84 lines in 71 files changed: 84 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/valhalla/pull/934.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/934/head:pull/934

PR: https://git.openjdk.org/valhalla/pull/934