Remove hacky function I forgot to migrate to GTK4

cozy/ui/library_view.py

@@ -87,7 +87,8 @@ def _on_sort_stack_changed(self, widget, _):
         self._view_model.library_view_mode = view_mode
 
     def populate_book_box(self):
-        self._book_box.remove_all_children()
+        for child in self._book_box:
+            self._book_box.remove(child)
 
         for book in self._view_model.books:
             book_element = BookElement(book)

cozy/ui/widgets/filter_list_box.py

@@ -11,7 +11,7 @@ def __init__(self, **properties):
         super().__init__(**properties)
 
     def populate(self, elements: list[str]):
-        self.remove_all_children()
+        self.remove_all()
 
         all_row = ListBoxRowWithData(_("All"), True)
         all_row.set_tooltip_text(_("Display all books"))
@@ -23,12 +23,7 @@ def populate(self, elements: list[str]):
             self.append(row)
 
     def select_row_with_content(self, row_content: str):
-        child = self.get_first_child()
-        while child:
-            next = child.get_next_sibling()
-
+        for child in self:
             if isinstance(child, ListBoxRowWithData) and child.data == row_content:
                 self.select_row(child)
                 break
-
-            child = next

main.py

@@ -94,16 +94,10 @@ def __on_command_line():
         ])
 
 
-def extend_classes():
-    extend_gtk_container()
-
-
 def main():
     __on_command_line()
     print(sys.argv)
 
-    extend_classes()
-
     listen()
 
     application = Application(pkgdatadir)
@@ -144,6 +138,5 @@ def listen():
     # Some modules import multiprocessing which would lead to an exception
     # when setting the start method
     from cozy.application import Application
-    from cozy.ui.widgets.list_box_extensions import extend_gtk_container
 
     main()