Add --no-background-compilation to tests that expect to run code in optimized form

tests/language/vm/licm_constant_redefinition_vm_test.dart

Index: tests/language/vm/licm_constant_redefinition_vm_test.dart
diff --git a/tests/language/vm/licm_constant_redefinition_vm_test.dart b/tests/language/vm/licm_constant_redefinition_vm_test.dart
index 24f481ef802b341f390fddd9e3319f6df2a38f49..662cb4b22ec098b36f02ad2d364e0cbd859b9371 100644
--- a/tests/language/vm/licm_constant_redefinition_vm_test.dart
+++ b/tests/language/vm/licm_constant_redefinition_vm_test.dart
@@ -1,7 +1,7 @@
 // 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.
-// VMOptions=--optimization_counter_threshold=100 --no-use-osr
+// VMOptions=--optimization_counter_threshold=100 --no-use-osr --no-background_compilation
 
 import "package:expect/expect.dart";