Remove package imports from itself.

pkg/front_end/lib/src/fasta/scanner/array_based_scanner.dart

 // Copyright (c) 2011, 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.scanner.array_based_scanner;
 
 import 'error_token.dart' show ErrorToken;
 
 import 'keyword.dart' show Keyword;
 
 import 'precedence.dart' show COMMENT_INFO, EOF_INFO, PrecedenceInfo;
 
 import 'token.dart' show BeginGroupToken, KeywordToken, SymbolToken, Token;
 
 import 'token_constants.dart'
     show LT_TOKEN, OPEN_CURLY_BRACKET_TOKEN, STRING_INTERPOLATION_TOKEN;
 
 import 'characters.dart' show $LF, $STX;
 
 import 'abstract_scanner.dart' show AbstractScanner;
 
-import 'package:front_end/src/fasta/util/link.dart' show Link;
+import '../util/link.dart' show Link;
 
 abstract class ArrayBasedScanner extends AbstractScanner {
   bool hasErrors = false;
 
   ArrayBasedScanner(bool includeComments, {int numberOfBytesHint})
       : super(includeComments, numberOfBytesHint: numberOfBytesHint);
 
   /**
    * The stack of open groups, e.g [: { ... ( .. :]
    * Each BeginGroupToken has a pointer to the token where the group
@@ skipping 196 matching lines @@
    * something which cannot possibly be part of a type parameter/argument
    * list, like the '=' in the above example.
    */
   void discardOpenLt() {
     while (!groupingStack.isEmpty &&
         identical(groupingStack.head.kind, LT_TOKEN)) {
       groupingStack = groupingStack.tail;
     }
   }
 }