RFR: 8334320: Replace vmTestbase/metaspace/share/TriggerUnloadingWithWhiteBox.java with ClassUnloadCommon from testlibrary

[Thomas Stuefe]

On Fri, 24 Jan 2025 12:48:37 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

> @tstuefe Can you review and comment since you added these tests? Thank you!

Sorry, @coleenp, I saw this too late. Your changes look good.

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PR Comment: https://git.openjdk.org/jdk/pull/23174#issuecomment-2632964787