RFR: 8293210: G1: Remove redundant check in G1FreeHumongousRegionClosure [v3]

[Albert Mingkun Yang]

On Mon, 19 Sep 2022 11:54:47 GMT, Albert Mingkun Yang <ayang at openjdk.org> wrote:

>> Simple change of removing unnecessary code.
>> 
>> Test: hotspot_gc
>
> Albert Mingkun Yang has updated the pull request incrementally with one additional commit since the last revision:
> 
>   cache g1h

Thanks for the review.

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PR: https://git.openjdk.org/jdk/pull/10119