Remove --compile_all from all but one service test

runtime/observatory/tests/service/allocations_test.dart

Index: runtime/observatory/tests/service/allocations_test.dart
diff --git a/runtime/observatory/tests/service/allocations_test.dart b/runtime/observatory/tests/service/allocations_test.dart
index 6cd953f0e1290aa8ac63bfc69f89a146f849c61c..fc0e09fc9e567a37aed2392bd8ca0ca5cd308d0f 100644
--- a/runtime/observatory/tests/service/allocations_test.dart
+++ b/runtime/observatory/tests/service/allocations_test.dart
@@ -1,7 +1,7 @@
 // Copyright (c) 2014, 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.
-// VMOptions=--compile_all --error_on_bad_type --error_on_bad_override
+// VMOptions=--error_on_bad_type --error_on_bad_override
 
 library allocations_test;