[turbofan] Remove the --print-turbo-replay flag.

src/compiler/graph-replay.h

-// 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.
-
-#ifndef V8_COMPILER_GRAPH_REPLAY_H_
-#define V8_COMPILER_GRAPH_REPLAY_H_
-
-#include "src/compiler/node.h"
-
-namespace v8 {
-namespace internal {
-namespace compiler {
-
-// Forward declarations.
-class Graph;
-
-// Helper class to print a full replay of a graph. This replay can be used to
-// materialize the same graph within a C++ unit test and hence test subsequent
-// optimization passes on a graph without going through the construction steps.
-class GraphReplayPrinter {
- public:
-#ifdef DEBUG
-  static void PrintReplay(Graph* graph);
-#else
-  static void PrintReplay(Graph* graph) {}
-#endif
-
- private:
-  GraphReplayPrinter() {}
-
-  static void PrintReplayOpCreator(const Operator* op);
-
-  DISALLOW_COPY_AND_ASSIGN(GraphReplayPrinter);
-};
-
-}  // namespace compiler
-}  // namespace internal
-}  // namespace v8
-
-#endif  // V8_COMPILER_GRAPH_REPLAY_H_