fix portable and 3.5 project references

MediaBrowser.Model/Session/PlaystateCommand.cs

@@ -39,17 +39,4 @@ namespace MediaBrowser.Model.Session
         /// </summary>
         FastForward
     }
-
-    public class PlaystateRequest
-    {
-        public PlaystateCommand Command { get; set; }
-
-        public long? SeekPositionTicks { get; set; }
-
-        /// <summary>
-        /// Gets or sets the controlling user identifier.
-        /// </summary>
-        /// <value>The controlling user identifier.</value>
-        public string ControllingUserId { get; set; }
-    }
 }