Remove old index and search implementations.

pkg/analysis_server/lib/src/services/index/local_memory_index.dart

Index: pkg/analysis_server/lib/src/services/index/local_memory_index.dart
diff --git a/pkg/analysis_server/lib/src/services/index/local_memory_index.dart b/pkg/analysis_server/lib/src/services/index/local_memory_index.dart
deleted file mode 100644
index ec69627121903c38b1ebe889d2005046f8457262..0000000000000000000000000000000000000000
--- a/pkg/analysis_server/lib/src/services/index/local_memory_index.dart
+++ /dev/null
@@ -1,18 +0,0 @@
-// 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 services.index.memory_file_index;
-
-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/local_index.dart';
-import 'package:analysis_server/src/services/index/store/memory_node_manager.dart';
-
-Index createLocalMemoryIndex() {
-  MemoryNodeManager nodeManager = new MemoryNodeManager();
-  LocalIndex index = new LocalIndex(nodeManager);
-  index.contributors = <IndexContributor>[new DartIndexContributor()];
-  return index;
-}