RFR: 8307078: Opensource and clean up five more AWT Focus related tests

[Phil Race]

On Fri, 28 Apr 2023 05:12:50 GMT, Alexander Zuev <kizune at openjdk.org> wrote:

> Cleaned up and ready to opensource:
> java/awt/Focus/FocusForRemovedComponentTest
> java/awt/Focus/FocusTraversalPolicyIAE
> java/awt/Focus/InitialFocusTest
> java/awt/Focus/LabelScrollbar
> java/awt/Focus/ModalDialogInFocusEventTest

Marked as reviewed by prr (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/13710#pullrequestreview-1406424323