RFR: 8342914: Remove calls to doPrivileged in swt

[Andy Goryachev]

On Mon, 28 Oct 2024 15:18:45 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

>> Removes doPrivileged in the following module:
>> 
>> - javafx.swt
>> 
>> See JDK-8342441 for details.
>> 
>> As a helpful hint for reviewers, I recommend reviewing this using the "Hide whitespace" option.
>
> modules/javafx.swt/src/main/java/javafx/embed/swt/FXCanvas.java line 359:
> 
>> 357:             });
>> 358:             return null;
>> 359:         }, null, FXCANVAS_PERMISSION);
> 
> I think `FXCANVAS_PERMISSION` is unused after this and can be removed (along with the related import).

there is a duplicate FXCANVAS_PERMISSION in PlatformImpl which should also be removed.

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PR Review Comment: https://git.openjdk.org/jfx/pull/1611#discussion_r1823154534