hg: jdk/sandbox: 8240133: G1DirtyCardQueue destructor has useless flush

[chris.hegarty at oracle.com]

Changeset: 2420daa87866
Author:    kbarrett
Date:      2020-03-08 17:33 -0400
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/2420daa87866

8240133: G1DirtyCardQueue destructor has useless flush
Summary: Removed useless call to flush.
Reviewed-by: tschatzl, sjohanss

! src/hotspot/share/gc/g1/g1DirtyCardQueue.cpp
! src/hotspot/share/gc/g1/g1DirtyCardQueue.hpp