Update Friends.cs

Author: ArvindHarinder1

Microsoft.SystemForCrossDomainIdentityManagement/Service/Friends.cs

@@ -1,6 +1,4 @@
-//------------------------------------------------------------
-// Copyright (c) Microsoft Corporation.  All rights reserved.  
-//------------------------------------------------------------
+// Copyright (c) Microsoft Corporation.// Licensed under the MIT license.
 
 using System.Runtime.CompilerServices;