This PR adds missing Files.delete() calls in the PrivateKeyParserTests.

Comment From: scottfrederick

@izeye The cleanup call here should take care of deleting the temporary files. Are you seeing the files left around after tests are complete?

Comment From: izeye

@scottfrederick Ah, I just thought that they are missed as the other tests have a call to the Files.delete(). Does it make sense to remove the calls in the other tests then?

Comment From: scottfrederick

@izeye I see the other Files.delete now. It looks like those are unnecessary, as are the ones in KeyStoreFactoryTests. It wouldn't hurt to remove them.

Comment From: izeye

@scottfrederick Thanks for the feedback! I updated this PR to remove them instead in both tests.

Comment From: scottfrederick

Thanks, as always @izeye.