[lworld] RFR: 8327280: [lworld] aarch64 compilation fails without support for JDK-8327150

[David Simms]

Remove the old "new inline instance" code

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Commit messages:
 - 8327280: [lworld] aarch64 compilation fails without support for JDK-8327150

Changes: https://git.openjdk.org/valhalla/pull/1031/files
 Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=1031&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8327280
  Stats: 27 lines in 3 files changed: 0 ins; 25 del; 2 mod
  Patch: https://git.openjdk.org/valhalla/pull/1031.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1031/head:pull/1031

PR: https://git.openjdk.org/valhalla/pull/1031