RFR: 8377161: G1: Remove unnecessary member G1FullGCScope::_g1h

[Albert Mingkun Yang]

On Wed, 4 Feb 2026 12:06:14 GMT, Thomas Schatzl <tschatzl at openjdk.org> wrote:

> Hi all,
> 
>   please review this trivial change that inlines the `_g1h` member use in `G1FullGCScope` to be allowed to remove it.
> 
> Testing: gha
> 
> Thanks,
>   Thomas

Marked as reviewed by ayang (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/29566#pullrequestreview-3750925987