Consolidate analyzer dependencies.

pkg/front_end/lib/src/fasta/target.dart

 // Copyright (c) 2016, 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 fasta.target;
 
 import 'dart:async' show Future;
 
 import 'ticker.dart' show Ticker;
 
-import 'ast_kind.dart' show AstKind;
-
 /// A compilation target.
 ///
 /// A target reads source files with [read] and writes out the resulting
 /// program when [writeOutline] is called.
 abstract class Target {
   final Ticker ticker;
 
   Target(this.ticker);
 
   /// Instructs this target to include [uri] in its result.
   void read(Uri uri);
 
   /// Write the resulting program in the file [uri].
-  Future writeProgram(Uri uri, AstKind astKind);
+  Future writeProgram(Uri uri);
 
   /// Write the resulting outline in the file [uri].
   Future writeOutline(Uri uri);
 }