Integrated: 8268656: [lqagain] A few code chunks dealing with dual class scheme still left in

[Srikanth Adayapalam]

Remove lingering dead code.

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Commit messages:
 - 8268656: [lqagain] A few code chunks dealing with dual class scheme still left in

Changes: https://git.openjdk.java.net/valhalla/pull/444/files
 Webrev: https://webrevs.openjdk.java.net/?repo=valhalla&pr=444&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8268656
  Stats: 99 lines in 3 files changed: 0 ins; 78 del; 21 mod
  Patch: https://git.openjdk.java.net/valhalla/pull/444.diff
  Fetch: git fetch https://git.openjdk.java.net/valhalla pull/444/head:pull/444

PR: https://git.openjdk.java.net/valhalla/pull/444