Revert "Add scroll property in listbox"

This reverts commit 6739a5e.

Author: Jack251970

Flow.Launcher/ResultListBox.xaml

@@ -12,7 +12,6 @@
     d:DesignHeight="100"
     d:DesignWidth="100"
     Focusable="False"
-    ScrollViewer.CanContentScroll="False"
     IsSynchronizedWithCurrentItem="True"
     ItemsSource="{Binding Results}"
     KeyboardNavigation.DirectionalNavigation="Cycle"