Update Jellyfin.Server/Middleware/QueryStringDecodingMiddleware.cs

Co-authored-by: Claus Vium <cvium@users.noreply.github.com>

Jellyfin.Server/Middleware/QueryStringDecodingMiddleware.cs

@@ -1,7 +1,6 @@
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Http.Features;
-using Microsoft.Extensions.Logging;
 
 namespace Jellyfin.Server.Middleware
 {