Code cleanup

Controllers/Managers/SongManager.cs

@@ -1,14 +1,3 @@
-using System;
-using System.Collections.Generic;
-using System.Configuration;
-using System.Linq;
-using System.Data;
-using System.IO;
-using System.Threading.Tasks;
-
-using Microsoft.AspNetCore.Http;
-using Microsoft.Extensions.Configuration;
-
 using NLog;
 
 using Icarus.Controllers.Utilities;