Cleanup unnecessary duplication of runtime functions.

src/runtime/runtime-numbers.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/v8.h"
 
 #include "src/arguments.h"
 #include "src/base/bits.h"
 #include "src/bootstrapper.h"
 #include "src/codegen.h"
@@ skipping 213 matching lines @@
   CONVERT_ARG_HANDLE_CHECKED(String, subject, 0);
 
   double value =
       StringToDouble(isolate->unicode_cache(), subject, ALLOW_TRAILING_JUNK,
                      std::numeric_limits<double>::quiet_NaN());
 
   return *isolate->factory()->NewNumber(value);
 }
 
 
-RUNTIME_FUNCTION(Runtime_NumberToStringRT) {
+RUNTIME_FUNCTION(Runtime_NumberToString) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 1);
   CONVERT_NUMBER_ARG_HANDLE_CHECKED(number, 0);
 
   return *isolate->factory()->NumberToString(number);
 }
 
 
 RUNTIME_FUNCTION(Runtime_NumberToStringSkipCache) {
   HandleScope scope(isolate);
@@ skipping 306 matching lines @@
 }
 
 
 RUNTIME_FUNCTION(Runtime_MaxSmi) {
   SealHandleScope shs(isolate);
   DCHECK(args.length() == 0);
   return Smi::FromInt(Smi::kMaxValue);
 }
 
 
-RUNTIME_FUNCTION(Runtime_NumberToString) {
-  SealHandleScope shs(isolate);
-  return __RT_impl_Runtime_NumberToStringRT(args, isolate);
-}
-
-
 RUNTIME_FUNCTION(Runtime_IsSmi) {
   SealHandleScope shs(isolate);
   DCHECK(args.length() == 1);
   CONVERT_ARG_CHECKED(Object, obj, 0);
   return isolate->heap()->ToBoolean(obj->IsSmi());
 }
 
 
 RUNTIME_FUNCTION(Runtime_IsNonNegativeSmi) {
   SealHandleScope shs(isolate);
   DCHECK(args.length() == 1);
   CONVERT_ARG_CHECKED(Object, obj, 0);
   return isolate->heap()->ToBoolean(obj->IsSmi() &&
                                     Smi::cast(obj)->value() >= 0);
 }
 
 
 RUNTIME_FUNCTION(Runtime_GetRootNaN) {
   SealHandleScope shs(isolate);
   DCHECK(args.length() == 0);
   return isolate->heap()->nan_value();
 }
 }  // namespace internal
 }  // namespace v8