hg: shenandoah/jdk10/hotspot: Remove obsolete and unused reduce-storeval-barrier optimization code.

[roman at kennke.org]

Changeset: 09bb36a01778
Author:    rkennke
Date:      2017-09-16 11:36 +0200
URL:       http://hg.openjdk.java.net/shenandoah/jdk10/hotspot/rev/09bb36a01778

Remove obsolete and unused reduce-storeval-barrier optimization code.

! src/share/vm/gc/shenandoah/shenandoah_globals.hpp
! src/share/vm/opto/graphKit.cpp
! src/share/vm/opto/graphKit.hpp
! src/share/vm/opto/library_call.cpp