RFR: 8319665: [macOS] Obsolete imports of <Carbon/Carbon.h> in java.desktop

[Phil Race]

Remove unused imports

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

Commit messages:
 - 8319665

Changes: https://git.openjdk.org/jdk/pull/16548/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=16548&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8319665
  Stats: 2 lines in 2 files changed: 0 ins; 2 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/16548.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/16548/head:pull/16548

PR: https://git.openjdk.org/jdk/pull/16548