hg: shenandoah/jdk10/hotspot: Revert G1 changes

[ashipile at redhat.com]

Changeset: a8c915a75cd2
Author:    shade
Date:      2017-07-11 11:38 +0200
URL:       http://hg.openjdk.java.net/shenandoah/jdk10/hotspot/rev/a8c915a75cd2

Revert G1 changes

! src/share/vm/gc/g1/g1CardLiveData.cpp
! src/share/vm/gc/g1/g1CardLiveData.hpp
! src/share/vm/gc/g1/g1CollectedHeap.cpp
! src/share/vm/gc/g1/g1ConcurrentMark.cpp
! src/share/vm/gc/g1/g1ConcurrentMark.hpp
! src/share/vm/gc/g1/g1ConcurrentMark.inline.hpp
! src/share/vm/gc/g1/g1HeapVerifier.cpp
! src/share/vm/gc/g1/g1HeapVerifier.hpp
! src/share/vm/gc/g1/g1RemSet.cpp
! src/share/vm/gc/g1/g1RemSet.hpp