[es6] Remove left-overs from Function.prototype.toMethod.

src/runtime/runtime-classes.cc

Index: src/runtime/runtime-classes.cc
diff --git a/src/runtime/runtime-classes.cc b/src/runtime/runtime-classes.cc
index 5219a6882b2ea72c61f4ff9f53dba107f74a8cdd..51e682f3255e8fed7f9082d61434e4b15c0e145a 100644
--- a/src/runtime/runtime-classes.cc
+++ b/src/runtime/runtime-classes.cc
@@ -74,19 +74,6 @@ RUNTIME_FUNCTION(Runtime_ThrowIfStaticPrototype) {
 }
 
 
-RUNTIME_FUNCTION(Runtime_ToMethod) {
-  HandleScope scope(isolate);
-  DCHECK(args.length() == 2);
-  CONVERT_ARG_HANDLE_CHECKED(JSFunction, fun, 0);
-  CONVERT_ARG_HANDLE_CHECKED(JSObject, home_object, 1);
-  Handle<JSFunction> clone = JSFunction::CloneClosure(fun);
-  Handle<Symbol> home_object_symbol(isolate->factory()->home_object_symbol());
-  JSObject::SetOwnPropertyIgnoreAttributes(clone, home_object_symbol,
-                                           home_object, DONT_ENUM).Assert();
-  return *clone;
-}
-
-
 RUNTIME_FUNCTION(Runtime_HomeObjectSymbol) {
   DCHECK(args.length() == 0);
   return isolate->heap()->home_object_symbol();