Revert "New Lint quick-fix: prefer_collection_literals (#29378)"

pkg/analysis_server/test/mock_sdk.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 testing.mock_sdk;
 
 import 'package:analyzer/file_system/file_system.dart' as resource;
 import 'package:analyzer/file_system/memory_file_system.dart' as resource;
 import 'package:analyzer/src/context/context.dart';
 import 'package:analyzer/src/generated/engine.dart';
@@ skipping 182 matching lines @@
 abstract class StreamTransformer<S, T> {}
 ''');
 
   static const MockSdkLibrary LIB_COLLECTION = const MockSdkLibrary(
       'dart:collection',
       '/lib/collection/collection.dart',
       '''
 library dart.collection;
 
 abstract class HashMap<K, V> implements Map<K, V> {}
-abstract class LinkedHashMap<K, V> implements HashMap<K, V> {}
 ''');
 
   static const MockSdkLibrary LIB_CONVERT = const MockSdkLibrary(
       'dart:convert',
       '/lib/convert/convert.dart',
       '''
 library dart.convert;
 
 import 'dart:async';
 
@@ skipping 234 matching lines @@
   bool get isInternal => shortName.startsWith('dart:_');
 
   @override
   bool get isShared => throw unimplemented;
 
   @override
   bool get isVmLibrary => throw unimplemented;
 
   UnimplementedError get unimplemented => new UnimplementedError();
 }