RFR: 8293213: G1: Remove redundant assertion in G1RemSet::clean_card_before_refine

[Kim Barrett]

On Thu, 1 Sep 2022 13:19:09 GMT, Albert Mingkun Yang <ayang at openjdk.org> wrote:

> Simple change of removing redundant assertion.
> 
> Test: hotspot_gc

Looks good.

-------------

Marked as reviewed by kbarrett (Reviewer).

PR: https://git.openjdk.org/jdk/pull/10120