RFR: 8278601: Parallel: Remove redundant code in ObjectStartArray::initialize

[Stefan Johansson]

On Mon, 13 Dec 2021 11:24:55 GMT, Albert Mingkun Yang <ayang at openjdk.org> wrote:

> Simple change of removing some redundant code and converting an unnecessary check to an assertion.
> 
> Test: hotspot_gc

Looks good

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Marked as reviewed by sjohanss (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/6813