RFR: 8339524: Clean up a few ExtendedRobot tests [v9]

[Alexey Ivanov]

On Tue, 19 Nov 2024 21:35:25 GMT, Alisen Chung <achung at openjdk.org> wrote:

>> Cleaning up tests building ExtendedRobot that shouldn't be.
>
> Alisen Chung has updated the pull request incrementally with one additional commit since the last revision:
> 
>   fix imports

Looks good to me except for adding `robot.delay(500)`.

test/jdk/javax/swing/JInternalFrame/6725409/bug6725409.java line 142:

> 140:     private static void sync() {
> 141:         robot.waitForIdle();
> 142:         robot.delay(500);

I still think `robot.delay(500);` is unnecessary in this test because the test never accesses UI.

By adding `delay(500)` to the `sync` method you make the test run longer… without a reason.

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Marked as reviewed by aivanov (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/20846#pullrequestreview-2455519770
PR Review Comment: https://git.openjdk.org/jdk/pull/20846#discussion_r1854575649