No more warnings for duplicate unnamed lib imports.

pkg/analyzer/lib/src/generated/error.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 engine.error;
 
 import 'dart:collection';
 
 import 'ast.dart' show AstNode;
 import 'element.dart';
@@ skipping 3934 matching lines @@
    * Parameters:
    * 0: the uri pointing to a first library
    * 1: the uri pointing to a second library
    * 2:e the shared name of the exported libraries
    */
   static const StaticWarningCode EXPORT_DUPLICATED_LIBRARY_NAMED =
       const StaticWarningCode('EXPORT_DUPLICATED_LIBRARY_NAMED',
           "The exported libraries '{0}' and '{1}' cannot have the same name '{2}'");
 
   /**
-   * 14.2 Exports: It is a static warning to export two different libraries with
-   * the same name.
-   *
-   * Parameters:
-   * 0: the uri pointing to a first library
-   * 1: the uri pointing to a second library
-   */
-  static const StaticWarningCode EXPORT_DUPLICATED_LIBRARY_UNNAMED =
-      const StaticWarningCode('EXPORT_DUPLICATED_LIBRARY_UNNAMED',
-          "The exported libraries '{0}' and '{1}' cannot both be unnamed");
-
-  /**
    * 12.14.2 Binding Actuals to Formals: It is a static warning if <i>m &lt;
    * h</i> or if <i>m &gt; n</i>.
    *
    * Parameters:
    * 0: the maximum number of positional arguments
    * 1: the actual number of positional arguments given
    *
    * See [NOT_ENOUGH_REQUIRED_ARGUMENTS].
    */
   static const StaticWarningCode EXTRA_POSITIONAL_ARGUMENTS =
@@ skipping 135 matching lines @@
    * Parameters:
    * 0: the uri pointing to a first library
    * 1: the uri pointing to a second library
    * 2: the shared name of the imported libraries
    */
   static const StaticWarningCode IMPORT_DUPLICATED_LIBRARY_NAMED =
       const StaticWarningCode('IMPORT_DUPLICATED_LIBRARY_NAMED',
           "The imported libraries '{0}' and '{1}' cannot have the same name '{2}'");
 
   /**
-   * 14.1 Imports: It is a static warning to import two different libraries with
-   * the same name.
-   *
-   * Parameters:
-   * 0: the uri pointing to a first library
-   * 1: the uri pointing to a second library
-   */
-  static const StaticWarningCode IMPORT_DUPLICATED_LIBRARY_UNNAMED =
-      const StaticWarningCode('IMPORT_DUPLICATED_LIBRARY_UNNAMED',
-          "The imported libraries '{0}' and '{1}' cannot both be unnamed");
-
-  /**
    * 14.1 Imports: It is a static warning if the specified URI of a deferred
    * import does not refer to a library declaration.
    *
    * Parameters:
    * 0: the uri pointing to a non-library declaration
    *
    * See [CompileTimeErrorCode.IMPORT_OF_NON_LIBRARY].
    */
   static const StaticWarningCode IMPORT_OF_NON_LIBRARY =
       const StaticWarningCode('IMPORT_OF_NON_LIBRARY',
@@ skipping 818 matching lines @@
    * Initialize a newly created error code to have the given [name].
    */
   const TodoCode(String name) : super(name, "{0}");
 
   @override
   ErrorSeverity get errorSeverity => ErrorSeverity.INFO;
 
   @override
   ErrorType get type => ErrorType.TODO;
 }