[lworld] Integrated: 8279377: [lworld] Javac Parser still has stale code supporting nullable projection types from a previous era

[Srikanth Adayapalam]

Garbage collect stale code handling nullable projection types using the ? syntax

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Commit messages:
 - 8279377: [lworld] Javac Parser still has stale code supporting nullable projection types from a previous era

Changes: https://git.openjdk.java.net/valhalla/pull/591/files
 Webrev: https://webrevs.openjdk.java.net/?repo=valhalla&pr=591&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8279377
  Stats: 11 lines in 1 file changed: 0 ins; 9 del; 2 mod
  Patch: https://git.openjdk.java.net/valhalla/pull/591.diff
  Fetch: git fetch https://git.openjdk.java.net/valhalla pull/591/head:pull/591

PR: https://git.openjdk.java.net/valhalla/pull/591