Revert two Kernel changes that were causing test failures.

tests/language_2/async_star_regression_fisk_test.dart

Index: tests/language_2/async_star_regression_fisk_test.dart
diff --git a/tests/language_2/async_star_regression_fisk_test.dart b/tests/language_2/async_star_regression_fisk_test.dart
deleted file mode 100644
index 6651c926480f342798d3ae367f5128056b261508..0000000000000000000000000000000000000000
--- a/tests/language_2/async_star_regression_fisk_test.dart
+++ /dev/null
@@ -1,59 +0,0 @@
-// Copyright (c) 2015, 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.
-
-// This test may crash dart2js.
-
-import "dart:async";
-import "package:expect/expect.dart";
-import "package:async_helper/async_helper.dart";
-
-main() {
-  var res = [];
-  fisk() async* {
-    res.add("+fisk");
-    try {
-      for (int i = 0; i < 2; i++) {
-        yield await new Future.microtask(() => i);
-      }
-    } finally {
-      res.add("-fisk");
-    }
-  }
-
-  fugl(int count) async {
-    res.add("fisk $count");
-    try {
-      await for (int i in fisk().take(count)) res.add(i);
-    } finally {
-      res.add("done");
-    }
-  }
-
-  asyncStart();
-  fugl(3)
-      .whenComplete(() => fugl(2))
-      .whenComplete(() => fugl(1))
-      .whenComplete(() {
-    Expect.listEquals([
-      "fisk 3",
-      "+fisk",
-      0,
-      1,
-      "-fisk",
-      "done",
-      "fisk 2",
-      "+fisk",
-      0,
-      1,
-      "-fisk",
-      "done",
-      "fisk 1",
-      "+fisk",
-      0,
-      "-fisk",
-      "done"
-    ], res);
-    asyncEnd();
-  });
-}