[lworld] RFR: 8378728: [lworld] Remove TRACE from ObjectInputStream

[Roger Riggs]

Remove TRACE function leftover from value class prototyping of serialization.

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

Commit messages:
 - 8378728: [lworld] Remove TRACE from ObjectInputStream

Changes: https://git.openjdk.org/valhalla/pull/2174/files
  Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=2174&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8378728
  Stats: 35 lines in 3 files changed: 0 ins; 33 del; 2 mod
  Patch: https://git.openjdk.org/valhalla/pull/2174.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/2174/head:pull/2174

PR: https://git.openjdk.org/valhalla/pull/2174