RFR: 8315875: GenShen: Remove heap mode check from ShenandoahInitLogger [v2]

[Aleksey Shipilev]

On Thu, 7 Sep 2023 23:32:59 GMT, William Kemper <wkemper at openjdk.org> wrote:

>> There are some additional improvements to the init logger that should be easy to upstream.
>
> William Kemper has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Hide global generation behind heap

Looks okay.

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Marked as reviewed by shade (Committer).

PR Review: https://git.openjdk.org/shenandoah/pull/320#pullrequestreview-1617070424