refactoring for the next stage

samples/NotificationFlyoutSample.Host/App.xaml

@@ -3,4 +3,4 @@
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
     <Application.Resources />
-</Application>
+</Application>

samples/NotificationFlyoutSample.Host/App.xaml.cs

@@ -1,10 +1,4 @@
-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 NotificationFlyoutSample.Host
 {
@@ -14,4 +8,4 @@ namespace NotificationFlyoutSample.Host
     public partial class App : Application
     {
     }
-}
+}

samples/NotificationFlyoutSample.Host/AssemblyInfo.cs

@@ -7,4 +7,4 @@ using System.Windows;
     ResourceDictionaryLocation.SourceAssembly //where the generic resource dictionary is located
                                               //(used if a resource is not found in the page,
                                               // app, or any theme specific resource dictionaries)
-)]
+)]

samples/NotificationFlyoutSample.Host/Program.cs

@@ -12,11 +12,11 @@ namespace NotificationFlyoutSample.Host
             {
                 var app = new App();
                 new NotificationFlyoutApplication
-                { 
+                {
                     Flyout = new Shell()
                 };
                 app.Run();
             }
         }
     }
-}
+}