[jfx-tests] RFR: 8315809: Fix copyright lines in jfx-tests repo after JDK-8315409

Wed Sep 6 18:30:27 UTC 2023

On Wed, 6 Sep 2023 18:22:38 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

> As mentioned in the JBS Description, I generated this PR by running the same copyright tool we use to update the jfx repo, with a slight modification to not filter out those files that already had "Copyright.*2023", since those are the ones that need to be fixed up for incorrect formatting.
> 
> I manually reverted two files that had an embedded copyright line in a String.

Reviewers: @arapte @shurymury

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PR Comment: https://git.openjdk.org/jfx-tests/pull/2#issuecomment-1708881863