Remove support for missing part-of tag.

tests/language/missing_part_of_tag_test.dart

Index: tests/language/missing_part_of_tag_test.dart
diff --git a/tests/standalone/http_launch_data/http_launch_main.dart b/tests/language/missing_part_of_tag_test.dart
similarity index 64%
copy from tests/standalone/http_launch_data/http_launch_main.dart
copy to tests/language/missing_part_of_tag_test.dart
index bd35bae2c6bc033c1a4ba1e87ee6e428af4853d1..ffb360cd14801fd0cd4f29ac47107903fd84a480 100644
--- a/tests/standalone/http_launch_data/http_launch_main.dart
+++ b/tests/language/missing_part_of_tag_test.dart
@@ -2,12 +2,10 @@
 // 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.
 
+// Test for missing part-of tag.
 
-library http_lanuch_main;
+library lib;
 
-import 'package:simple/simple.dart';
-
-main() {
-  print(getSimpleString());
-}
+part 'missing_part_of_tag_part.dart'; /// 01: compile-time error
 
+void main() {}