RFR: 8294057: Parallel: Tighten ParallelCompactData::initialize_region_data

[Albert Mingkun Yang]

On Tue, 20 Sep 2022 11:02:32 GMT, Albert Mingkun Yang <ayang at openjdk.org> wrote:

> Simple change of removing some unnecessary code.
> 
> Test: hotspot_gc

Thanks for the review.

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PR: https://git.openjdk.org/jdk/pull/10356