Eliminate old style import from language tests

tests/language/library1_negative_test.dart

Index: tests/language/library1_negative_test.dart
===================================================================
--- tests/language/library1_negative_test.dart	(revision 15598)
+++ tests/language/library1_negative_test.dart	(working copy)
@@ -5,9 +5,9 @@
 // This test should fail to load because we are importing two libraries
 // which define the same top level name foo, and we are referring to the name.
 
-#library("Library1NegativeTest.dart");
-#import("library1.dart");  // Defines top level variable 'foo'
-#import("library2.dart");  // Defines top level variable 'foo'
+library Library1NegativeTest.dart;
+import "library1.dart";  // Defines top level variable 'foo'
+import "library2.dart";  // Defines top level variable 'foo'
 
 
 main() {