Promises: cleanup call to PromiseSet

This got left behind from the changes in
https://codereview.chromium.org/2007803002/

PromiseSet only takes 3 arguments.

BUG=v8:5046

Review-Url: https://codereview.chromium.org/2016183002
Cr-Commit-Position: refs/heads/master@{#36556}

src/js/promise.js

@@ -127,8 +127,7 @@ function PromiseCreateAndSet(status, value) {
 }
 
 function PromiseInit(promise) {
-  return PromiseSet(
-      promise, kPending, UNDEFINED, UNDEFINED, UNDEFINED, UNDEFINED);
+  return PromiseSet(promise, kPending, UNDEFINED);
 }
 
 function FulfillPromise(promise, status, value, promiseQueue) {