RFR: 8205137: Remove Applet support from SwingSet2

Thu Sep 9 05:13:59 UTC 2021

On Thu, 9 Sep 2021 03:46:00 GMT, Phil Race <prr at openjdk.org> wrote:

> Hmm .. I missed the delete.
> Well .. what were those imports for ? Nothing used them.
> Now, although arguably a separate issue, we have precedent for cleaning up imports at such a time.

This helped to prove that the usage of applets is actually removed from these files, I found it quite useful during the review.

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PR: https://git.openjdk.java.net/jdk/pull/5401