Make more use of generated code in analysis server.

pkg/analysis_server/test/search/member_references_test.dart

Index: pkg/analysis_server/test/search/member_references_test.dart
diff --git a/pkg/analysis_server/test/search/member_references_test.dart b/pkg/analysis_server/test/search/member_references_test.dart
index 68d0e8d6af7f56582dfa3db668235f97cf282fe5..e45b401a0a7d4b2e12e11a35ad016d9042aa5441 100644
--- a/pkg/analysis_server/test/search/member_references_test.dart
+++ b/pkg/analysis_server/test/search/member_references_test.dart
@@ -7,9 +7,7 @@ library test.search.member_references;
 import 'dart:async';
 
 import 'package:analysis_server/src/protocol.dart';
-import 'package:analysis_server/src/protocol2.dart' show
-    SearchFindMemberReferencesParams, SearchFindMemberReferencesResult;
-import 'package:analysis_server/src/search/search_result.dart';
+import 'package:analysis_server/src/protocol2.dart';
 import 'package:analysis_testing/reflective_tests.dart';
 import 'package:unittest/unittest.dart';