Fix accidental test namespace in project

OhmGraphite/CustomConfig.cs

@@ -1,6 +1,6 @@
 using System.Configuration;
 
-namespace OhmGraphite.Test
+namespace OhmGraphite
 {
     class CustomConfig : IAppConfig
     {

OhmGraphite/Program.cs

@@ -4,7 +4,6 @@ using System.Diagnostics;
 using System.IO;
 using NLog;
 using LibreHardwareMonitor.Hardware;
-using OhmGraphite.Test;
 using Prometheus;
 using Topshelf;