RFR: 8359996: Remove unnecessary List.indexOf key from Track.remove

[Alexey Ivanov]

On Wed, 23 Apr 2025 08:53:57 GMT, Andrey Turbanov <aturbanov at openjdk.org> wrote:

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

Changes requested by aivanov (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/24818#pullrequestreview-2943916437