RFR: Remaining x86 assembler cleanup

[Roman Kennke]

Only one dangling includes is left in X86 diff vs upstream, except for
the stuff that we actually want to upstream. We never use anything from
that header here.

diff --git a/src/hotspot/cpu/x86/macroAssembler_x86.cpp
b/src/hotspot/cpu/x86/macroAssembler_x86.cpp
--- a/src/hotspot/cpu/x86/macroAssembler_x86.cpp
+++ b/src/hotspot/cpu/x86/macroAssembler_x86.cpp
@@ -35,7 +35,6 @@
 #include "memory/universe.hpp"
 #include "oops/accessDecorators.hpp"
 #include "oops/klass.inline.hpp"
-#include "oops/oop.hpp"
 #include "prims/methodHandles.hpp"
 #include "runtime/biasedLocking.hpp"
 #include "runtime/flags/flagSetting.hpp"

Ok?