remove some usage of ActiveService

MediaBrowser.Controller/LiveTv/ILiveTvManager.cs

@@ -14,12 +14,6 @@ namespace MediaBrowser.Controller.LiveTv
     /// </summary>
     public interface ILiveTvManager
     {
-        /// <summary>
-        /// Gets the active service.
-        /// </summary>
-        /// <value>The active service.</value>
-        ILiveTvService ActiveService { get; }
-
         /// <summary>
         /// Gets the services.
         /// </summary>

MediaBrowser.Server.Implementations/LiveTv/LiveTvManager.cs

@@ -1843,15 +1843,13 @@ namespace MediaBrowser.Server.Implementations.LiveTv
 
         private bool IsLiveTvEnabled(User user)
         {
-            return user.Policy.EnableLiveTvAccess && ActiveService != null;
+            return user.Policy.EnableLiveTvAccess && Services.Count > 0;
         }
 
         public IEnumerable<User> GetEnabledUsers()
         {
-            var service = ActiveService;
-
             return _userManager.Users
-                .Where(i => i.Policy.EnableLiveTvAccess && service != null);
+                .Where(IsLiveTvEnabled);
         }
 
         /// <summary>

MediaBrowser.Server.Implementations/LiveTv/RefreshChannelsScheduledTask.cs

@@ -52,7 +52,7 @@ namespace MediaBrowser.Server.Implementations.LiveTv
 
         public bool IsHidden
         {
-            get { return _liveTvManager.ActiveService == null; }
+            get { return _liveTvManager.Services.Count == 0; }
         }
 
         public bool IsEnabled