Removed CallerMemberNameAttribute from Net3_Proxy because it already exists in AsyncBridge

Net3-Proxy/CompilerServices.cs

@@ -6,9 +6,4 @@ using System.Text;
 namespace System.Runtime.CompilerServices
 {
 
-    [AttributeUsage(AttributeTargets.Parameter, AllowMultiple = false, Inherited = true)]
-    public sealed class CallerMemberNameAttribute : Attribute
-    {
-    }
-
 }