Remove unnecessary using statement.

Author: markjamesm

src/UI/Tui.cs

@@ -5,7 +5,6 @@
 using System;
 using System.Collections.Generic;
 using System.IO;
-using System.Net.Http;
 using MusicSharp.Enums;
 using MusicSharp.Models;
 using MusicSharp.AudioPlayer;