Code Quality: Remove setting item template and source in Omnibar (#17375)

Author: seer-by-sentry[bot]

src/Files.App.Controls/Omnibar/Omnibar.cs

@@ -219,12 +219,6 @@ internal protected bool TryToggleIsSuggestionsPopupOpen(bool wantToOpen)
 				return false;
 			}
 
-			if (CurrentSelectedMode is not null)
-			{
-				_textBoxSuggestionsListView.ItemTemplate = CurrentSelectedMode.ItemTemplate;
-				_textBoxSuggestionsListView.ItemsSource = CurrentSelectedMode.ItemsSource;
-			}
-
 			_textBoxSuggestionsPopup.IsOpen = wantToOpen;
 
 			GlobalHelper.WriteDebugStringForOmnibar("The suggestions pop-up is open.");