RFR: JDK-8260200 G1: Remove unnecessary update in FreeRegionList::remove_starting_at [v5]

[Hamlin Li]

On Wed, 27 Jan 2021 11:18:51 GMT, Hamlin Li <mli at openjdk.org> wrote:

>> Testing looks good.
>
>> Testing looks good.
> 
> Hi Stefan, Thank you for reviewing. :-)

@tschatzl , Hi Thomas, bot just added the "ready" label, is this PR ready to be integrated? It's only approved by 1 "R". 
Thanks.

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PR: https://git.openjdk.java.net/jdk/pull/2181