move client mods updates to actual steam api

PluginLoader/LoaderTools.cs

@@ -1,10 +1,7 @@
 using System.Diagnostics;
-using System.Reflection;
-using System.Runtime.CompilerServices;
 using System.Security.Cryptography;
 using System.Text;
 using Windows.UI.Popups;
-using HarmonyLib;
 using NLog;
 using PluginLoader.SEPM;
 using Sandbox;