Remove any 'group' invocations enclosing 'runReflectiveTests'.

pkg/analysis_services/test/index/store/codec_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.store.codec;
 
 import 'package:analysis_services/index/index.dart';
 import 'package:analysis_services/src/index/store/codec.dart';
 import 'package:analysis_testing/abstract_single_unit.dart';
 import 'package:analysis_testing/mocks.dart';
 import 'package:analysis_testing/reflective_tests.dart';
 import 'package:analyzer/src/generated/element.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:unittest/unittest.dart';
 
 
 main() {
   groupSep = ' | ';
-  group('ContextCodec', () {
-    runReflectiveTests(_ContextCodecTest);
-  });
-  group('ElementCodec', () {
-    runReflectiveTests(_ElementCodecTest);
-  });
-  group('RelationshipCodec', () {
-    runReflectiveTests(_RelationshipCodecTest);
-  });
-  group('StringCodec', () {
-    runReflectiveTests(_StringCodecTest);
-  });
+  runReflectiveTests(_ContextCodecTest);
+  runReflectiveTests(_ElementCodecTest);
+  runReflectiveTests(_RelationshipCodecTest);
+  runReflectiveTests(_StringCodecTest);
 }
 
 
 @ReflectiveTestCase()
 class _ContextCodecTest {
   ContextCodec codec = new ContextCodec();
 
   void test_encode_decode() {
     AnalysisContext contextA = new MockAnalysisContext('contextA');
     AnalysisContext contextB = new MockAnalysisContext('contextB');
@@ skipping 188 matching lines @@
 class _StringCodecTest {
   StringCodec codec = new StringCodec();
 
   void test_all() {
     int idA = codec.encode('aaa');
     int idB = codec.encode('bbb');
     expect(codec.decode(idA), 'aaa');
     expect(codec.decode(idB), 'bbb');
   }
 }