Remove some unused media encoding code

MediaBrowser.Controller/MediaEncoding/ImageEncodingOptions.cs

@@ -1,23 +0,0 @@
-#nullable disable
-
-#pragma warning disable CS1591
-
-namespace MediaBrowser.Controller.MediaEncoding
-{
-    public class ImageEncodingOptions
-    {
-        public string InputPath { get; set; }
-
-        public int? Width { get; set; }
-
-        public int? Height { get; set; }
-
-        public int? MaxWidth { get; set; }
-
-        public int? MaxHeight { get; set; }
-
-        public int? Quality { get; set; }
-
-        public string Format { get; set; }
-    }
-}

MediaBrowser.Controller/MediaEncoding/MediaEncoderHelpers.cs

@@ -1,11 +0,0 @@
-#pragma warning disable CS1591
-
-namespace MediaBrowser.Controller.MediaEncoding
-{
-    /// <summary>
-    /// Class MediaEncoderHelpers.
-    /// </summary>
-    public static class MediaEncoderHelpers
-    {
-    }
-}