Remove TypingResetter.

src/typing-reset.cc

-// Copyright 2015 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/v8.h"
-
-#include "src/typing-reset.h"
-
-#include "src/ast/ast.h"
-#include "src/ast/scopes.h"
-#include "src/codegen.h"
-
-namespace v8 {
-namespace internal {
-
-
-TypingReseter::TypingReseter(Isolate* isolate, FunctionLiteral* root)
-    : AstExpressionVisitor(isolate, root) {}
-
-
-void TypingReseter::VisitExpression(Expression* expression) {
-  expression->set_bounds(Bounds::Unbounded());
-}
-}  // namespace internal
-}  // namespace v8