[turbofan] Remove global InstructionOperand caches.

src/v8.cc

Index: src/v8.cc
diff --git a/src/v8.cc b/src/v8.cc
index b04ccc07c700e35f572bc42f4eec949315174766..495921eeb103bd41cef39942eaf9d9c15edb2c2c 100644
--- a/src/v8.cc
+++ b/src/v8.cc
@@ -8,7 +8,6 @@
 #include "src/base/once.h"
 #include "src/base/platform/platform.h"
 #include "src/bootstrapper.h"
-#include "src/compiler/pipeline.h"
 #include "src/debug.h"
 #include "src/deoptimizer.h"
 #include "src/elements.h"
@@ -50,7 +49,6 @@ void V8::TearDown() {
   Bootstrapper::TearDownExtensions();
   ElementsAccessor::TearDown();
   LOperand::TearDownCaches();
-  compiler::Pipeline::TearDown();
   ExternalReference::TearDownMathExpData();
   RegisteredExtension::UnregisterAll();
   Isolate::GlobalTearDown();
@@ -94,7 +92,6 @@ void V8::InitializeOncePerProcessImpl() {
 #endif
   ElementsAccessor::InitializeOncePerProcess();
   LOperand::SetUpCaches();
-  compiler::Pipeline::SetUp();
   SetUpJSCallerSavedCodeData();
   ExternalReference::SetUp();
   Bootstrapper::InitializeOncePerProcess();