hg: jdk/jdk10: 8196883: G1RemSet::refine_card_concurrently doesn't need to check for cards in collection set

[thomas.schatzl at oracle.com]

Changeset: 808555a54e9c
Author:    tschatzl
Date:      2018-02-08 10:15 +0100
URL:       http://hg.openjdk.java.net/jdk/jdk10/rev/808555a54e9c

8196883: G1RemSet::refine_card_concurrently doesn't need to check for cards in collection set
Summary: Remove code related to collection set checking in that method.
Reviewed-by: kbarrett, ehelin

! src/hotspot/share/gc/g1/g1RemSet.cpp