Remove old code generator.

runtime/vm/code_generator.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_CODE_GENERATOR_H_
 #define VM_CODE_GENERATOR_H_
 
 #include "vm/globals.h"
 #include "vm/runtime_entry.h"
 
-#if defined(TARGET_ARCH_IA32)
-#include "vm/code_generator_ia32.h"
-#elif defined(TARGET_ARCH_X64)
-#include "vm/code_generator_x64.h"
-#elif defined(TARGET_ARCH_ARM)
-#include "vm/code_generator_arm.h"
-#else
-#error Unknown architecture.
-#endif
-
 namespace dart {
 
 // Declaration of runtime entries called from stub or generated code.
 DECLARE_RUNTIME_ENTRY(AllocateArray);
 DECLARE_RUNTIME_ENTRY(AllocateClosure);
 DECLARE_RUNTIME_ENTRY(AllocateImplicitInstanceClosure);
 DECLARE_RUNTIME_ENTRY(AllocateImplicitStaticClosure);
 DECLARE_RUNTIME_ENTRY(AllocateContext);
 DECLARE_RUNTIME_ENTRY(AllocateObject);
 DECLARE_RUNTIME_ENTRY(AllocateObjectWithBoundsCheck);
@@ skipping 101 matching lines @@
   const Class& class_;
 };
 
 
 RawCode* ResolveCompileInstanceCallTarget(Isolate* isolate,
                                           const Instance& receiver);
 
 }  // namespace dart
 
 #endif  // VM_CODE_GENERATOR_H_