[Interpreter] Remove LdaConstant+ToName peephole optimization.

src/interpreter/bytecode-peephole-optimizer.h

Index: src/interpreter/bytecode-peephole-optimizer.h
diff --git a/src/interpreter/bytecode-peephole-optimizer.h b/src/interpreter/bytecode-peephole-optimizer.h
index 95c9d57795e3029f5d49efa9699715d02bd8a67d..e30e3b47bd02052d73d7c6bf35a86c84547917e5 100644
--- a/src/interpreter/bytecode-peephole-optimizer.h
+++ b/src/interpreter/bytecode-peephole-optimizer.h
@@ -21,8 +21,7 @@ class BytecodePeepholeActionAndData;
 class BytecodePeepholeOptimizer final : public BytecodePipelineStage,
                                         public ZoneObject {
  public:
-  BytecodePeepholeOptimizer(ConstantArrayBuilder* constant_array_builder,
-                            BytecodePipelineStage* next_stage);
+  explicit BytecodePeepholeOptimizer(BytecodePipelineStage* next_stage);
 
   // BytecodePipelineStage interface.
   void Write(BytecodeNode* node) override;
@@ -48,13 +47,9 @@ class BytecodePeepholeOptimizer final : public BytecodePipelineStage,
   bool LastIsValid() const;
   void SetLast(const BytecodeNode* const node);
 
-  Handle<Object> GetConstantForIndexOperand(const BytecodeNode* const node,
-                                            int index) const;
-
   BytecodePipelineStage* next_stage() const { return next_stage_; }
   BytecodeNode* last() { return &last_; }
 
-  ConstantArrayBuilder* constant_array_builder_;
   BytecodePipelineStage* next_stage_;
   BytecodeNode last_;