RFR: 8276850: Remove outdated comment in HeapRegionManager::par_iterate

[Thomas Schatzl]

On Tue, 9 Nov 2021 12:44:04 GMT, Albert Mingkun Yang <ayang at openjdk.org> wrote:

>> Hi all,
>> 
>>   please review this (trivial?) removal of a hopelessly outdated comment about a method parameter that has not been there for years now...
>> 
>> Testing: gha
>> 
>> Thanks,
>>   Thomas
>
> Good and trivial.

Thanks @albertnetymk @kstefanj for your reviews

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PR: https://git.openjdk.java.net/jdk/pull/6309