update mac project

MediaBrowser.Server.Mac/MacAppHost.cs

@@ -1,7 +1,6 @@
 using System;
 using System.Collections.Generic;
 using System.Reflection;
-using Emby.Server.Core;
 using Emby.Server.Implementations;
 using Emby.Server.Implementations.FFMpeg;
 using MediaBrowser.Model.IO;

MediaBrowser.Server.Mac/Main.cs

@@ -16,8 +16,6 @@ using System.Threading;
 using MonoMac.AppKit;
 using MonoMac.Foundation;
 using MonoMac.ObjCRuntime;
-using Emby.Server.Core;
-using Emby.Server.Core.Cryptography;
 using Emby.Server.Implementations;
 using Emby.Server.Implementations.Logging;
 using Emby.Server.Mac.Native;