Fix e migliorati caricamenti

salesbook.Maui/MainPage.xaml.cs

@@ -1,23 +1,10 @@
-using CommunityToolkit.Mvvm.Messaging;
-using salesbook.Shared.Core.Messages.Back;
-
 namespace salesbook.Maui
 {
     public partial class MainPage : ContentPage
     {
-        private readonly IMessenger _messenger;
-        
-        public MainPage(IMessenger messenger)
+        public MainPage()
         {
             InitializeComponent();
-            _messenger = messenger;
         }
-
-        protected override bool OnBackButtonPressed()
-        {
-            _messenger.Send(new HardwareBackMessage("back"));
-            return true;
-        }
-
     }
 }