Removed virtualization tab from test app.

samples/XamlTestApplicationPcl/Views/MainWindow.cs

@@ -27,9 +27,6 @@ namespace XamlTestApplication.Views
             AvaloniaXamlLoader.Load(this);
             _exitMenu = this.FindControl<MenuItem>("exitMenu");
             _exitMenu.Click += (s, e) => Application.Current.Exit();
-
-            var virtualList = this.FindControl<ListBox>("virtualList");
-            virtualList.Items = Enumerable.Range(0, 200).Select(x => $"Item {x}").ToList();
         }
     }
 }

samples/XamlTestApplicationPcl/Views/MainWindow.xaml

@@ -24,16 +24,7 @@
       <TabControl.Transition>
         <PageSlide Duration="0.25" />
       </TabControl.Transition>
-
-
-      <TabItem Header="Virtualization">
-        <DockPanel LastChildFill="True">
-          <StackPanel DockPanel.Dock="Right" Orientation="Vertical">
-          </StackPanel>
-          <ListBox Name="virtualList"/>
-        </DockPanel>
-      </TabItem>
-      
+     
       <TabItem Header="Buttons">
         <ScrollViewer CanScrollHorizontally="False">
           <StackPanel Margin="10" Gap="4">