Eliminate old style import from language tests

tests/language/library_same_name_used_test.dart

Index: tests/language/library_same_name_used_test.dart
===================================================================
--- tests/language/library_same_name_used_test.dart	(revision 15598)
+++ tests/language/library_same_name_used_test.dart	(working copy)
@@ -3,10 +3,10 @@
 // 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();