Remove frog from the repository.

frog/tests/await/conditional_normalization_negative_test.dart

Index: frog/tests/await/conditional_normalization_negative_test.dart
diff --git a/frog/tests/await/conditional_normalization_negative_test.dart b/frog/tests/await/conditional_normalization_negative_test.dart
deleted file mode 100644
index 7658185963e132318d8ff5f71e11fb0381cf8f78..0000000000000000000000000000000000000000
--- a/frog/tests/await/conditional_normalization_negative_test.dart
+++ /dev/null
@@ -1,18 +0,0 @@
-// 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.
-
-// The next line is used to tell test.dart that this test is run by invoking
-// awaitc.dart and passing this file as an argument (e.g. frog
-// frog/await/awaitc.dart test.dart):
-// VMOptions=frog/await/awaitc.dart
-
-// Await within the test of a conditional.
-
-#import("await_test_helper.dart");
-
-main() {
-  if (!(await futureOf(false))) {
-    Expect.fails("fails to make this a negative test");
-  }
-}