RFR: 8316324: Opensource five miscellaneous Swing tests

[Alexander Zuev]

On Sun, 24 Mar 2024 00:00:25 GMT, Phil Race <prr at openjdk.org> wrote:

>> test/jdk/javax/swing/InputVerifier/bug4774166.java line 229:
>> 
>>> 227:     public void cleanupGUI() {
>>> 228:         if (testframe != null) {
>>> 229:             testframe.setVisible(false);
>> 
>> `testframe.setVisible(false);` is required here? Any advantage for setting the visibility to false ? anyhow its been disposed.....
>
> Not harmful, but not needed either.

Ok, removing them.

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PR Review Comment: https://git.openjdk.org/jdk/pull/18443#discussion_r1537856832