Remove obsolete GUI

Maybe in future I'll replace it with ASFui being developed on SG

GUI/Program.cs

@@ -1,16 +0,0 @@
-using System;
-using System.Windows.Forms;
-
-namespace GUI {
-	static class Program {
-		/// <summary>
-		/// Der Haupteinstiegspunkt für die Anwendung.
-		/// </summary>
-		[STAThread]
-		static void Main() {
-			Application.EnableVisualStyles();
-			Application.SetCompatibleTextRenderingDefault(false);
-			Application.Run(new Form1());
-		}
-	}
-}