[builtins] Remove the weird STACK_OVERFLOW builtin.

src/runtime/runtime-internal.cc

Index: src/runtime/runtime-internal.cc
diff --git a/src/runtime/runtime-internal.cc b/src/runtime/runtime-internal.cc
index 0127f2381e5cd8443670ad07d0a05a1a89adbe32..18b9481afc4d1f0a2299ace32cd9340c7e18aa29 100644
--- a/src/runtime/runtime-internal.cc
+++ b/src/runtime/runtime-internal.cc
@@ -88,6 +88,13 @@ RUNTIME_FUNCTION(Runtime_ReThrow) {
 }
 
 
+RUNTIME_FUNCTION(Runtime_ThrowStackOverflow) {
+  SealHandleScope shs(isolate);
+  DCHECK_EQ(0, args.length());
+  return isolate->StackOverflow();
+}
+
+
 RUNTIME_FUNCTION(Runtime_UnwindAndFindExceptionHandler) {
   SealHandleScope shs(isolate);
   DCHECK(args.length() == 0);