[turbofan] Remove global InstructionOperand caches.

src/compiler/pipeline.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler/pipeline.h"
 
 #include <fstream>  // NOLINT(readability/streams)
 #include <sstream>
 
 #include "src/base/platform/elapsed-timer.h"
@@ skipping 1156 matching lines @@
     verifier->VerifyAssignment();
     verifier->VerifyGapMoves();
   }
 
   if (FLAG_trace_turbo && !data->MayHaveUnverifiableGraph()) {
     TurboCfgFile tcf(data->isolate());
     tcf << AsC1VAllocator("CodeGen", data->register_allocator());
   }
 }
 
-
-void Pipeline::SetUp() {
-  InstructionOperand::SetUpCaches();
-}
-
-
-void Pipeline::TearDown() {
-  InstructionOperand::TearDownCaches();
-}
-
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8