RFR: 8287558: Remove remset coarsening stats during g1 remset summary printing

[Thomas Schatzl]

On Wed, 1 Jun 2022 12:43:38 GMT, tqxia <duke at openjdk.java.net> wrote:

> Remset summary printing prints coarsening statistics in addition to remset summaries; that information is either duplicated with "Coarsening (recent)" printouts (with gc+remset=debug) at GC start or all-zeros at GC end.
> 
> Given that Remset summary printing is enabled with gc+remset=trace which covers the recent/all coarsening statistics, the coarsening statistics during remset summary are somewhat duplicate (or useless for the after-gc one).
> 
> Remove the coarsening statistics from the remset summaries.

Lgtm.

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Marked as reviewed by tschatzl (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/8971