RFR: 8369483: Cleanup dead code in HandleArea

[Joel Sikström]

On Thu, 9 Oct 2025 08:58:06 GMT, Francesco Andreuzzi <fandreuzzi at openjdk.org> wrote:

>> Hello,
>> 
>> When reading up on how HandleArea and HandleMark's work I found some dead code and comments in the HandleArea class. This makes the code a bit easier to read and understand.
>> 
>> Testing:
>> * Oracle's tier1-2
>
> Marked as reviewed by fandreuzzi (Author).

Thank you for the reviews! @fandreuz @stefank

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PR Comment: https://git.openjdk.org/jdk/pull/27717#issuecomment-3388766574