RFR: 8359053: Implement JEP 504 - Remove the Applet API [v9]

[Alexey Ivanov]

On Tue, 10 Jun 2025 17:59:41 GMT, Phil Race <prr at openjdk.org> wrote:

>> Shall I submit a bug to consider removing this code?
>> 
>> Without the comment and an issue to track it, no one will ever remember to look into it.
>
> yes, go ahead.

Submitted [JDK-8359932](https://bugs.openjdk.org/browse/JDK-8359932): _[macosx] Popups don't activate applet's process - unused code?_

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

PR Review Comment: https://git.openjdk.org/jdk/pull/25698#discussion_r2154771290