fix(ng1 benchmarks): revert *ng-if to ng-if

Author: vicb

modules/benchmarks_external/src/naive_infinite_scroll/app.dart

@@ -10,7 +10,7 @@ import 'package:angular2/src/test_lib/benchmark_util.dart';
         <div style="display: flex">
           <scroll-area scroll-top="scrollTop"></scroll-area>
         </div>
-        <div *ng-if="scrollAreas.length > 0">
+        <div ng-if="scrollAreas.length > 0">
           <p>Following tables are only here to add weight to the UI:</p>
           <scroll-area ng-repeat="scrollArea in scrollAreas"></scroll-area>
         </div>

modules/benchmarks_external/src/tree/tree_benchmark.dart

@@ -50,8 +50,8 @@ main() {
     selector: 'tree',
     map: const {'data': '=>data'},
     template: '<span> {{data.value}}'
-    '<span *ng-if="data.right != null"><tree data=data.right></span>'
-    '<span *ng-if="data.left != null"><tree data=data.left></span>'
+    '<span ng-if="data.right != null"><tree data=data.right></span>'
+    '<span ng-if="data.left != null"><tree data=data.left></span>'
     '</span>')
 class TreeComponent {
   var data;