Remove unnecessary extension

DiscordChatExporter.Core/Exporting/ExportAssetDownloader.cs

@@ -75,7 +75,7 @@ internal partial class ExportAssetDownloader
 
         return SHA256
             .HashData(Encoding.UTF8.GetBytes(NormalizeUrl(url)))
-            .ToHex()
+            .Pipe(Convert.ToHexStringLower)
             // 5 chars ought to be enough for anybody
             .Truncate(5);
     }

DiscordChatExporter.Core/Utils/Extensions/BinaryExtensions.cs

@@ -1,22 +0,0 @@
-using System.Globalization;
-using System.Text;
-
-namespace DiscordChatExporter.Core.Utils.Extensions;
-
-public static class BinaryExtensions
-{
-    extension(byte[] data)
-    {
-        public string ToHex(bool isUpperCase = true)
-        {
-            var buffer = new StringBuilder(2 * data.Length);
-
-            foreach (var b in data)
-            {
-                buffer.Append(b.ToString(isUpperCase ? "X2" : "x2", CultureInfo.InvariantCulture));
-            }
-
-            return buffer.ToString();
-        }
-    }
-}