RFR: 8337641: G1: Remove unused G1CollectedHeap::alloc_highest_free_region [v2]

[Albert Mingkun Yang]

On Thu, 1 Aug 2024 09:49:47 GMT, Albert Mingkun Yang <ayang at openjdk.org> wrote:

>> Trivial removing dead code.
>
> Albert Mingkun Yang has updated the pull request incrementally with one additional commit since the last revision:
> 
>   review

Thanks for review.

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PR Comment: https://git.openjdk.org/jdk/pull/20415#issuecomment-2263075474