Eliminate old style import from language tests

tests/language/library_same_name_used_test.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.
 
 // 'X' is defined as an interface in lib1 and a class implementing that
-// interface in lib2.  Use of #import prefixes should allow this.
+// interface in lib2.  Use of import prefixes should allow this.
 
-#library('main');
-#import("library_same_name_used_lib1.dart");
+library main;
+import "library_same_name_used_lib1.dart";
 
 main() {
   var x = makeX();
   Expect.equals('lib2.X', '$x');
 }