[runtime] Kill %Arguments and %ArgumentsLength.

src/interface-descriptors.cc

Index: src/interface-descriptors.cc
diff --git a/src/interface-descriptors.cc b/src/interface-descriptors.cc
index 073a0a38e750db8374c5d68013fb15fd50ee2af1..844cc3fe950922f8298b19f4fcc98a8becf24570 100644
--- a/src/interface-descriptors.cc
+++ b/src/interface-descriptors.cc
@@ -339,13 +339,6 @@ void ApiGetterDescriptor::InitializePlatformSpecific(
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
-
-void ArgumentsAccessReadDescriptor::InitializePlatformSpecific(
-    CallInterfaceDescriptorData* data) {
-  Register registers[] = {index(), parameter_count()};
-  data->InitializePlatformSpecific(arraysize(registers), registers);
-}
-
 FunctionType*
 ArgumentsAccessNewDescriptor::BuildCallInterfaceDescriptorFunctionType(
     Isolate* isolate, int paramater_count) {