removed unused imports

EZPPClient Installer/Models/MD5File.cs

@@ -1,11 +1,4 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Security.Cryptography;
-using System.Text;
-using System.Threading.Tasks;
-
-namespace EZPPClient_Installer
+namespace EZPPClient_Installer
 {
   class MD5File
   {