Remove unnecessary 'noSuchMethod' declarations.

pkg/analysis_server/test/services/index/dart_index_contributor_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.services.src.index.dart_index_contributor;
 
 import 'package:analysis_server/src/provisional/index/index_core.dart';
 import 'package:analysis_server/src/services/index/index.dart';
 import 'package:analysis_server/src/services/index/index_contributor.dart';
 import 'package:analysis_server/src/services/index/index_store.dart';
@@ skipping 1763 matching lines @@
   ExpectedLocation(this.indexable, this.offset, this.length, this.isQualified,
       this.isResolved);
 
   @override
   String toString() {
     return 'ExpectedLocation(indexable=$indexable; offset=$offset; length=$length;'
         ' isQualified=$isQualified isResolved=$isResolved)';
   }
 }
 
-class MockIndexStore extends TypedMock implements InternalIndexStore {
-  noSuchMethod(Invocation invocation) => super.noSuchMethod(invocation);
-}
+class MockIndexStore extends TypedMock implements InternalIndexStore {}
 
 /**
  * Information about a relation recorded into {@link IndexStore}.
  */
 class RecordedRelation {
   final IndexableObject indexable;
   final RelationshipImpl relationship;
   final LocationImpl location;
 
   RecordedRelation(this.indexable, this.relationship, this.location);
 
   @override
   String toString() {
     return 'RecordedRelation(indexable=$indexable; relationship=$relationship; '
         'location=$location; flags='
         '${location.isQualified ? "Q" : ""}'
         '${location.isResolved ? "R" : ""})';
   }
 }