Remove old index and search implementations.

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

-// Copyright (c) 2015, 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.indexable_file;
-
-import 'package:analysis_server/src/provisional/index/index_core.dart';
-import 'package:analyzer/src/generated/engine.dart';
-
-/**
- * An [IndexableObject] which is used to index references to a file.
- */
-class IndexableFile implements IndexableObject {
-  /**
-   * The path of the file to be indexed.
-   */
-  @override
-  final String path;
-
-  /**
-   * Initialize a newly created indexable file to represent the given [path].
-   */
-  IndexableFile(this.path);
-
-  @override
-  String get filePath => path;
-
-  @override
-  IndexableObjectKind get kind => IndexableFileKind.INSTANCE;
-
-  @override
-  int get offset => -1;
-
-  @override
-  bool operator ==(Object object) =>
-      object is IndexableFile && object.path == path;
-
-  @override
-  String toString() => path;
-}
-
-/**
- * The kind of an indexable file.
- */
-class IndexableFileKind implements IndexableObjectKind<IndexableFile> {
-  /**
-   * The unique instance of this class.
-   */
-  static final IndexableFileKind INSTANCE =
-      new IndexableFileKind._(IndexableObjectKind.nextIndex);
-
-  /**
-   * The index uniquely identifying this kind.
-   */
-  final int index;
-
-  /**
-   * Initialize a newly created kind to have the given [index].
-   */
-  IndexableFileKind._(this.index) {
-    IndexableObjectKind.register(this);
-  }
-
-  @override
-  IndexableFile decode(AnalysisContext context, String filePath, int offset) {
-    return new IndexableFile(filePath);
-  }
-
-  @override
-  int encodeHash(StringToInt stringToInt, IndexableFile indexable) {
-    String path = indexable.path;
-    return stringToInt(path);
-  }
-}