Issue 23337. Quick Fix for removing dead code.

pkg/analysis_server/lib/src/services/correction/fix.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 analysis_server.src.services.correction.fix;
 
 import 'package:analysis_server/edit/fix/fix_core.dart';
 import 'package:analysis_server/src/plugin/server_plugin.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/error.dart';
@@ skipping 70 matching lines @@
   static const IMPORT_LIBRARY_PROJECT =
       const FixKind('IMPORT_LIBRARY_PROJECT', 49, "Import library '{0}'");
   static const IMPORT_LIBRARY_SDK =
       const FixKind('IMPORT_LIBRARY_SDK', 49, "Import library '{0}'");
   static const IMPORT_LIBRARY_SHOW =
       const FixKind('IMPORT_LIBRARY_SHOW', 49, "Update library '{0}' import");
   static const INSERT_SEMICOLON =
       const FixKind('INSERT_SEMICOLON', 50, "Insert ';'");
   static const MAKE_CLASS_ABSTRACT =
       const FixKind('MAKE_CLASS_ABSTRACT', 50, "Make class '{0}' abstract");
+  static const REMOVE_DEAD_CODE =
+      const FixKind('REMOVE_DEAD_CODE', 50, "Remove dead code");
   static const REMOVE_PARAMETERS_IN_GETTER_DECLARATION = const FixKind(
       'REMOVE_PARAMETERS_IN_GETTER_DECLARATION', 50,
       "Remove parameters in getter declaration");
   static const REMOVE_PARENTHESIS_IN_GETTER_INVOCATION = const FixKind(
       'REMOVE_PARENTHESIS_IN_GETTER_INVOCATION', 50,
       "Remove parentheses in getter invocation");
   static const REMOVE_UNNECASSARY_CAST =
       const FixKind('REMOVE_UNNECASSARY_CAST', 50, "Remove unnecessary cast");
   static const REMOVE_UNUSED_CATCH_CLAUSE =
       const FixKind('REMOVE_UNUSED_CATCH', 50, "Remove unused 'catch' clause");
@@ skipping 12 matching lines @@
       "Return 'Future' from 'async' function");
   static const USE_CONST = const FixKind('USE_CONST', 50, "Change to constant");
   static const USE_EFFECTIVE_INTEGER_DIVISION = const FixKind(
       'USE_EFFECTIVE_INTEGER_DIVISION', 50,
       "Use effective integer division ~/");
   static const USE_EQ_EQ_NULL =
       const FixKind('USE_EQ_EQ_NULL', 50, "Use == null instead of 'is Null'");
   static const USE_NOT_EQ_NULL =
       const FixKind('USE_NOT_EQ_NULL', 50, "Use != null instead of 'is! Null'");
 }