RFR: 8281268: Resolve duplication of test ClassTransformer class

[KIRIYAMA Takuya]

On Thu, 12 May 2022 06:43:29 GMT, KIRIYAMA Takuya <duke at openjdk.java.net> wrote:

> ClassTransformer.java is duplicated because ClassTransformer.java was copied from test/jdk/com/sun/jdi/lib/jdb to test/lib/jdk/test/lib/util at [JDK-8240908](https://bugs.openjdk.java.net/browse/JDK-8240908). test/lib/jdk/test/lib/util/ClassTransformer.java should be deleted and test/jdk/com/sun/jdi/lib/jdb/ClassTransformer.java should be used. This is because ClassTransformer is used for testing jdi, and it is not appropriate to exist in test/lib/jdk/test/lib/util.
> Would you please review this fix?

All right.. I closed this pull request.

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PR: https://git.openjdk.java.net/jdk/pull/8672