RFR: 8357621: G1: Clean up G1BiasedArray [v3]

[Albert Mingkun Yang]

On Fri, 23 May 2025 12:25:36 GMT, Thomas Schatzl <tschatzl at openjdk.org> wrote:

>> Hi all,
>> 
>>   please review this minor touch-up of the G1BiasedArray classes, removing some unused methods and improving method visibility a bit.
>> 
>> Testing: gha
>> 
>> Thanks,
>>   Thomas
>
> Thomas Schatzl has updated the pull request incrementally with one additional commit since the last revision:
> 
>   * fix gtests: move gtest specific code to gtest

Marked as reviewed by ayang (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/25406#pullrequestreview-2867390119