[cleanup] Remove unused runtime error functions/messages

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 4e9bece95b7fe4256fa5b745130ba3f8da530198..1c53f0f62619df84cbe9b109bc645c8bf4019778 100644
--- a/src/runtime/runtime-classes.cc
+++ b/src/runtime/runtime-classes.cc
@@ -20,13 +20,6 @@ namespace v8 {
 namespace internal {
 
 
-RUNTIME_FUNCTION(Runtime_ThrowNonMethodError) {
-  HandleScope scope(isolate);
-  DCHECK_EQ(0, args.length());
-  THROW_NEW_ERROR_RETURN_FAILURE(
-      isolate, NewReferenceError(MessageTemplate::kNonMethod));
-}
-
 RUNTIME_FUNCTION(Runtime_ThrowUnsupportedSuperError) {
   HandleScope scope(isolate);
   DCHECK_EQ(0, args.length());
@@ -45,13 +38,6 @@ RUNTIME_FUNCTION(Runtime_ThrowConstructorNonCallableError) {
 }
 
 
-RUNTIME_FUNCTION(Runtime_ThrowArrayNotSubclassableError) {
-  HandleScope scope(isolate);
-  DCHECK_EQ(0, args.length());
-  THROW_NEW_ERROR_RETURN_FAILURE(
-      isolate, NewTypeError(MessageTemplate::kArrayNotSubclassable));
-}
-
 RUNTIME_FUNCTION(Runtime_ThrowStaticPrototypeError) {
   HandleScope scope(isolate);
   DCHECK_EQ(0, args.length());