chore: remove int in favor for number

Closes #3511

modules/angular2/test/change_detection/iterable.ts

@@ -1,7 +1,7 @@
 import {List} from 'angular2/src/facade/collection';
 
 export class TestIterable {
-  list: List<int>;
+  list: List<number>;
   constructor() { this.list = []; }
 
   [Symbol.iterator]() { return this.list[Symbol.iterator](); }