And the winner is... Stylet!

src/Artemis.UI/App.xaml.cs

@@ -1,17 +1,11 @@
-using System;
-using System.Collections.Generic;
-using System.Configuration;
-using System.Data;
-using System.Linq;
-using System.Threading.Tasks;
-using System.Windows;
+using System.Windows;
 
 namespace Artemis.UI
 {
     /// <summary>
-    /// Interaction logic for App.xaml
+    ///     Interaction logic for App.xaml
     /// </summary>
     public partial class App : Application
     {
     }
-}
+}