[lworld] Integrated: 8327498: [lworld] Remove Q-descriptor change from ASM and other clean up

[Mandy Chung]

Remove the changes to support Q-descriptor and other clean up to match the master version.

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Commit messages:
 - 8327498: [lworld] Remove Q-descriptor change from ASM and other clean up

Changes: https://git.openjdk.org/valhalla/pull/1036/files
 Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=1036&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8327498
  Stats: 98 lines in 27 files changed: 4 ins; 62 del; 32 mod
  Patch: https://git.openjdk.org/valhalla/pull/1036.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1036/head:pull/1036

PR: https://git.openjdk.org/valhalla/pull/1036