rm unused imports

Program.cs

@@ -6,11 +6,7 @@ using OpenTK.Windowing.GraphicsLibraryFramework;
 // https://docs.sixlabors.com/api/ImageSharp/SixLabors.ImageSharp.Image.html
 using SixLabors.ImageSharp;
 using SixLabors.ImageSharp.Metadata.Profiles.Exif;
-using System.IO;
-using System.Reflection.Metadata;
 using System.Runtime.CompilerServices;
-using static System.Runtime.InteropServices.JavaScript.JSType;
-using System.Xml.Linq;
 using Image = SixLabors.ImageSharp.Image;
 
 namespace SemiColinGames;