[intrinsics] Remove obsolete intrinsics.

src/runtime/runtime-object.cc

Index: src/runtime/runtime-object.cc
diff --git a/src/runtime/runtime-object.cc b/src/runtime/runtime-object.cc
index 60d054d3e4f5fb438db1d5883cd76dc7f18fc04f..88c3490f87153dd83ba709251fc08f9a87543b1c 100644
--- a/src/runtime/runtime-object.cc
+++ b/src/runtime/runtime-object.cc
@@ -564,21 +564,6 @@ RUNTIME_FUNCTION(Runtime_HasProperty) {
 }
 
 
-RUNTIME_FUNCTION(Runtime_PropertyIsEnumerable) {
-  HandleScope scope(isolate);
-  DCHECK(args.length() == 2);
-
-  CONVERT_ARG_HANDLE_CHECKED(JSReceiver, object, 0);
-  CONVERT_ARG_HANDLE_CHECKED(Name, key, 1);
-
-  Maybe<PropertyAttributes> maybe =
-      JSReceiver::GetOwnPropertyAttributes(object, key);
-  if (!maybe.IsJust()) return isolate->heap()->exception();
-  if (maybe.FromJust() == ABSENT) return isolate->heap()->false_value();
-  return isolate->heap()->ToBoolean((maybe.FromJust() & DONT_ENUM) == 0);
-}
-
-
 RUNTIME_FUNCTION(Runtime_GetOwnPropertyKeys) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 2);
@@ -868,15 +853,6 @@ RUNTIME_FUNCTION(Runtime_ToPrimitive_Number) {
 }
 
 
-RUNTIME_FUNCTION(Runtime_ToPrimitive_String) {
-  HandleScope scope(isolate);
-  DCHECK_EQ(1, args.length());
-  CONVERT_ARG_HANDLE_CHECKED(Object, input, 0);
-  RETURN_RESULT_OR_FAILURE(
-      isolate, Object::ToPrimitive(input, ToPrimitiveHint::kString));
-}
-
-
 RUNTIME_FUNCTION(Runtime_ToNumber) {
   HandleScope scope(isolate);
   DCHECK_EQ(1, args.length());