RFR: Usage tracking cleanup

[Y. Srinivas Ramakrishna]

On Tue, 18 Apr 2023 00:22:20 GMT, William Kemper <wkemper at openjdk.org> wrote:

>> The humongous waste tracking isn't in `master` yet - but soon will be after I finish testing some requested changes.
>
> I will uncomment it after humongous waste tracking is in.

+1, why? :-)

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PR Review Comment: https://git.openjdk.org/shenandoah/pull/260#discussion_r1169382094