[async-await] Remove RejectPromiseNoDebugEvent

src/js/async-await.js

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 (function(global, utils, extrasUtils) {
 
 "use strict";
 
 %CheckIsBootstrapping();
 
@@ skipping 88 matching lines @@
 
 // Called by the parser from the desugaring of 'await' when catch
 // prediction indicates that there is a locally surrounding catch block
 function AsyncFunctionAwaitCaught(generator, awaited, outerPromise) {
   if (DEBUG_IS_ACTIVE && %is_promise(awaited)) {
     %PromiseMarkHandledHint(awaited);
   }
   AsyncFunctionAwait(generator, awaited, outerPromise);
 }
 
-// How the parser rejects promises from async/await desugaring
-function RejectPromiseNoDebugEvent(promise, reason) {
-  return %promise_internal_reject(promise, reason, false);
-}
-
 function AsyncFunctionPromiseCreate() {
   var promise = %promise_internal_constructor(UNDEFINED);
   if (DEBUG_IS_ACTIVE) {
     // Push the Promise under construction in an async function on
     // the catch prediction stack to handle exceptions thrown before
     // the first await.
     // Assign ID and create a recurring task to save stack for future
     // resumptions from await.
     %DebugAsyncFunctionPromiseCreated(promise);
   }
   return promise;
 }
 
 function AsyncFunctionPromiseRelease(promise) {
   if (DEBUG_IS_ACTIVE) {
     // Pop the Promise under construction in an async function on
     // from catch prediction stack.
     %DebugPopPromise();
   }
 }
 
 %InstallToContext([
   "async_function_await_caught", AsyncFunctionAwaitCaught,
   "async_function_await_uncaught", AsyncFunctionAwaitUncaught,
-  "reject_promise_no_debug_event", RejectPromiseNoDebugEvent,
   "async_function_promise_create", AsyncFunctionPromiseCreate,
   "async_function_promise_release", AsyncFunctionPromiseRelease,
 ]);
 
 })