RFR: 8319192: Remove javax.swing.plaf.synth.SynthLookAndFeel.load(URL url)

Tue Mar 4 23:59:12 UTC 2025

Back in JDK 21 we deprecated-for-removal SynthLookAndFeel.load(URL) and targeted it to be removed under this bug ID in JDK 25 .. which is now here.

No open tests needed to be updated to accommodate this removal 
I did find one closed manual test, written to explicitly test this API back when it was added, and I'll need to remove that, but it doesn't affect this PR.

There will be a CSR (and probably a release note too).

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Commit messages:
 - 8319192

Changes: https://git.openjdk.org/jdk/pull/23909/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=23909&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8319192
  Stats: 86 lines in 2 files changed: 0 ins; 79 del; 7 mod
  Patch: https://git.openjdk.org/jdk/pull/23909.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/23909/head:pull/23909

PR: https://git.openjdk.org/jdk/pull/23909