Remove old #import, #source, and #library syntax from tests/standalone.

tests/standalone/io/http_redirect_test.dart

Index: tests/standalone/io/http_redirect_test.dart
diff --git a/tests/standalone/io/http_redirect_test.dart b/tests/standalone/io/http_redirect_test.dart
index 1bad27f0027554ee50a2d8459a4e1696547afa16..3e8bcb47f2da8fb64e2f3a2f55b3dc5331d00a04 100644
--- a/tests/standalone/io/http_redirect_test.dart
+++ b/tests/standalone/io/http_redirect_test.dart
@@ -3,8 +3,8 @@
 // BSD-style license that can be found in the LICENSE file.
 //
 
-#import("dart:io");
-#import("dart:uri");
+import "dart:io";
+import "dart:uri";
 
 HttpServer setupServer() {
   HttpServer server = new HttpServer();