remove unused using

Jellyfin.Server/Helpers/StartupHelpers.cs

@@ -15,7 +15,6 @@ using MediaBrowser.Model.IO;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.Logging;
 using Serilog;
-using SQLitePCL;
 using ILogger = Microsoft.Extensions.Logging.ILogger;
 
 namespace Jellyfin.Server.Helpers;