RFR: 8311183: Remove unused mapping test files

Wed Jul 5 17:08:56 UTC 2023

On Mon, 3 Jul 2023 17:02:58 GMT, Naoto Sato <naoto at openjdk.org> wrote:

> There are unused charset mapping test files under `test/jdk/sun/nio/cs/mapping` directory, where one of them (`JIS0212.b2c.private`) has a questionable copyright header from the Unicode Consortium. They should be removed.

+1

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Marked as reviewed by bpb (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/14757#pullrequestreview-1514980588