remove unused class

ErsatzTV.Core/Domain/MediaItemMetadata.cs

@@ -1,12 +0,0 @@
-using System;
-
-namespace ErsatzTV.Core.Domain
-{
-    public class MediaItemMetadata
-    {
-        public MetadataSource Source { get; set; }
-        public DateTime? LastWriteTime { get; set; }
-        public string Title { get; set; }
-        public string SortTitle { get; set; }
-    }
-}