RFR: 8348301: Remove unused Reference.waitForReferenceProcessing break-ins in tests

[Sean Mullan]

On Thu, 23 Jan 2025 14:49:28 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> I think I need another review for integration?

Alan's review should be sufficient I think. The bug should have a `noreg-self` label.

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PR Comment: https://git.openjdk.org/jdk/pull/23239#issuecomment-2610341728