RFR: 8328746: Remove unused imports in demo apps

[Andy Goryachev]

On Tue, 26 Mar 2024 16:16:37 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

>> this is how the IDE formatter is currently configured - it should not matter, especially since it dos not use wildcards (except for static imports).
>
> While it doesn't matter from a correctness point of view, if we are going to make changes like this to several files across multiple PRs, I want to make a deliberate decision rather than "whatever the Eclipse IDE happens to be configured to do by default". That way whenever new files are created or existing files are modified, we can have consistency rather than "dueling import sorting".

It looks like Eclipse uses the following order **by default**: [java,javax,org,com].

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PR Review Comment: https://git.openjdk.org/jfx/pull/1420#discussion_r1539698283