Fix future_test.dart and remove future2_test.dart.

tests/lib/lib.status

Index: tests/lib/lib.status
diff --git a/tests/lib/lib.status b/tests/lib/lib.status
index e8f93842d999e7e40abe7b538e92622b38cc82a8..a9515a944e9b3239ee29ea1269a5310b8e545a93 100644
--- a/tests/lib/lib.status
+++ b/tests/lib/lib.status
@@ -2,13 +2,9 @@
 # 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.
 
-[ $runtime == vm ]
-async/future2_test: Fail # Bug 6890 .TODO(ajohnsen): Fix this as part of library changes.
-
 [ $compiler == dart2js ]
 math/*: Skip
 mirrors/*: Skip
-async/future2_test: Fail # Bug 6890 .TODO(ajohnsen): Fix this as part of library changes.
 
 [ $compiler == dart2js && $runtime == d8 ]
 async/future_delayed_error_test: Fail # Timer interface not supported; dartbug.com/7728.
@@ -18,7 +14,6 @@ async/slow_consumer_test: Fail # Timer interface not supported; dartbug.com/7728
 async/stream_controller_async_test: Fail # Timer interface not supported; dartbug.com/7728.
 async/stream_min_max_test: Fail # Timer interface not supported; dartbug.com/7728.
 async/stream_single_test: Fail # Timer interface not supported; dartbug.com/7728.
-async/future2_test: Fail # Timer interface not supported; dartbug.com/7728.
 async/futures_test: Fail # Timer interface not supported; dartbug.com/7728.
 async/merge_stream_test: Fail # Timer interface not supported; dartbug.com/7728.
 
@@ -41,9 +36,6 @@ crypto/hmac_sha256_test: Fail
 [ $runtime == vm && $arch == x64 ]
 async/slow_consumer2_test: Fail # Issue 7726
 
-[ $compiler == none && $runtime == drt ]
-async/future2_test: Fail # Issue 7736
-
 [ $compiler == dart2js && $runtime == d8 && $checked ]
 # Issue 7733.
 async/stream_controller_test: Fail