chore: clear typehinting errors

dzgui/views/components/frame.py

@@ -1,17 +1,17 @@
-from dzgui.util import strings, css, open_links
+from dzgui.util import css
 
 import gi
 
 gi.require_version("Gtk", "3.0")
 from gi.repository import Gtk  # noqa
 
+
 class HeadingFrame(Gtk.Box):
     def __init__(self, widget: Gtk.Widget, heading: str) -> None:
         super().__init__(orientation=Gtk.Orientation.VERTICAL)
 
         label = Gtk.Label(label=heading)
         label.set_halign(Gtk.Align.START)
-        # TODO: rename selector
         css.add_class(label, "settings-subheading")
 
         frame = Gtk.Frame(hexpand=True)