RFR: 8291472: [macos] jawt 1.4 lock/unlock not supported

[Alisen Chung]

Removing if check for unsupported jawt versions

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Commit messages:
 - update copyright year
 - remove if check for awt version >= 1.4

Changes: https://git.openjdk.org/jdk/pull/19639/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=19639&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8291472
  Stats: 10 lines in 1 file changed: 0 ins; 1 del; 9 mod
  Patch: https://git.openjdk.org/jdk/pull/19639.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/19639/head:pull/19639

PR: https://git.openjdk.org/jdk/pull/19639