RFR: JDK-8289741 : Remove unused imports from DTDBuilder.java

[ScientificWare]

On Tue, 5 Jul 2022 11:34:05 GMT, Julian Waters <jwaters at openjdk.org> wrote:

>> Alright, was asking since I can help create one for you, but it seems that others already have it covered
>
>> @TheShermanTanker , thank you for asking and helping.
>> 
>> > it seems that others already have it covered
>> 
>> In fact, I dont known. Yesterday, I posted 3 reports in the Java Bug Database and I have no feedback at this moment.
> 
> Well, in that case, wait no longer!
> Your issue ID is [8289741](https://bugs.openjdk.org/browse/JDK-8289741), just change your title to "8289741" and the automated tooling should take care of the rest and send this PR to the appropriate teams for review.
> 
> All the best!

@TheShermanTanker Thanks.

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PR: https://git.openjdk.org/jdk/pull/9360