fix invocation completion test

pkg/analysis_server/test/completion_test.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library test.completion.support;
 
 import 'dart:collection';
 
 import 'completion_test_support.dart';
 
@@ skipping 1842 matching lines @@
 void r1(var v) {
   v.!1toString!2().!3hash!4Code
 }''',
         <String>[
             "1+toString",
             "1-==",
             "2+toString",
             "3+hashCode",
             "3+toString",
             "4+hashCode",
-            "4-toString"],
-        failingTests: '34');
+            "4-toString"]);
 
     CompletionTestCase.buildTests('test002', '''
 void r2(var vim) {
   v!1.toString()
 }''', <String>["1+vim"]);
 
     CompletionTestCase.buildTests('test003', '''
 class A {
   int a() => 3;
   int b() => this.!1a();
@@ skipping 524 matching lines @@
         'test_classMembers_inGetter',
         '''class A { var fff; get z {ff!1}}''',
         <String>["1+fff"]);
 
     CompletionTestCase.buildTests(
         'testSingle',
         '''class A {int x; !2mth() {int y = this.x;}}class B{}''',
         <String>["2+B"]);
   }
 }