RFR: 8369851: Remove darcy author tags from langtools tests

[Joe Darcy]

A little test cleanup to conform to current conventions of not using author tags.

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Commit messages:
 - JDK-8369851: Remove darcy author tags from langtools tests

Changes: https://git.openjdk.org/jdk/pull/27808/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=27808&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8369851
  Stats: 135 lines in 87 files changed: 1 ins; 67 del; 67 mod
  Patch: https://git.openjdk.org/jdk/pull/27808.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27808/head:pull/27808

PR: https://git.openjdk.org/jdk/pull/27808