RFR: 8328742: Remove unused imports in manual tests

[Kevin Rushforth]

On Thu, 21 Mar 2024 19:38:38 GMT, Andy Goryachev <angorya at openjdk.org> wrote:

> Using Eclipse IDE to remove unused imports in **manual tests** and update the copyright year to 2024. Using wildcard for more than 10 static imports.
> 
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> 
> --
> 
> This is a trivial change, 1 reviewer is probably enough.

Marked as reviewed by kcr (Lead).

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PR Review: https://git.openjdk.org/jfx/pull/1418#pullrequestreview-1975192482