removed unused attributes

MediaBrowser.Controller/Entities/UserItemData.cs

@@ -1,5 +1,4 @@
-using ProtoBuf;
-using System;
+using System;
 using System.Runtime.Serialization;
 
 namespace MediaBrowser.Controller.Entities
@@ -7,14 +6,12 @@ namespace MediaBrowser.Controller.Entities
     /// <summary>
     /// Class UserItemData
     /// </summary>
-    [ProtoContract]
     public class UserItemData
     {
         /// <summary>
         /// Gets or sets the user id.
         /// </summary>
         /// <value>The user id.</value>
-        [ProtoMember(1)]
         public Guid UserId { get; set; }
 
         /// <summary>
@@ -27,7 +24,6 @@ namespace MediaBrowser.Controller.Entities
         /// <value>The rating.</value>
         /// <exception cref="System.ArgumentOutOfRangeException">A 0-10 rating is required for UserItemData.</exception>
         /// <exception cref="System.InvalidOperationException">A 0-10 rating is required for UserItemData.</exception>
-        [ProtoMember(2)]
         public float? Rating
         {
             get
@@ -52,35 +48,30 @@ namespace MediaBrowser.Controller.Entities
         /// Gets or sets the playback position ticks.
         /// </summary>
         /// <value>The playback position ticks.</value>
-        [ProtoMember(3)]
         public long PlaybackPositionTicks { get; set; }
 
         /// <summary>
         /// Gets or sets the play count.
         /// </summary>
         /// <value>The play count.</value>
-        [ProtoMember(4)]
         public int PlayCount { get; set; }
 
         /// <summary>
         /// Gets or sets a value indicating whether this instance is favorite.
         /// </summary>
         /// <value><c>true</c> if this instance is favorite; otherwise, <c>false</c>.</value>
-        [ProtoMember(5)]
         public bool IsFavorite { get; set; }
 
         /// <summary>
         /// Gets or sets the last played date.
         /// </summary>
         /// <value>The last played date.</value>
-        [ProtoMember(6)]
         public DateTime? LastPlayedDate { get; set; }
 
         /// <summary>
         /// Gets or sets a value indicating whether this <see cref="UserItemData" /> is played.
         /// </summary>
         /// <value><c>true</c> if played; otherwise, <c>false</c>.</value>
-        [ProtoMember(7)]
         public bool Played { get; set; }
 
         /// <summary>