Split "_Driver" tests to separate test files.

pkg/analysis_server/test/integration/completion/get_suggestions_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.
 
 import 'package:analysis_server/plugin/protocol/protocol.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
 import '../integration_tests.dart';
 
 main() {
   defineReflectiveSuite(() {
     defineReflectiveTests(GetSuggestionsTest);
-    defineReflectiveTests(GetSuggestionsTest_Driver);
   });
 }
 
 class AbstractGetSuggestionsTest extends AbstractAnalysisServerIntegrationTest {
   String path;
   String content;
   int completionOffset;
 
   void setTestSource(String relPath, String content) {
     path = sourcePath(relPath);
@@ skipping 92 matching lines @@
       // Exception expected
       return errorToken;
     }).then((result) {
       expect(result, same(errorToken));
     });
   }
 }
 
 @reflectiveTest
 class GetSuggestionsTest extends AbstractGetSuggestionsTest {}
-
-@reflectiveTest
-class GetSuggestionsTest_Driver extends AbstractGetSuggestionsTest {
-  @override
-  bool get enableNewAnalysisDriver => true;
-}