RFR: 8360487: Remove unnecessary List.indexOf key from AbstractMidiDevice.TransmitterList.remove

[Andrey Turbanov]

No need to call `List.indexOf(Object)` before `List.remove(int)`. Instead we can call `List.remove(Object)` directly. It's faster and cleaner.

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Commit messages:
 - [PATCH] Remove unnecessary List.indexOf key from AbstractMidiDevice.TransmitterList.remove

Changes: https://git.openjdk.org/jdk/pull/25931/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=25931&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8360487
  Stats: 5 lines in 1 file changed: 0 ins; 3 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/25931.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25931/head:pull/25931

PR: https://git.openjdk.org/jdk/pull/25931