UPDATE boxing methods for rendering

controllers/gui_controller.py

@@ -1,11 +1,10 @@
 from render.gui_renderer import GUIRenderer
 
 class GUIController:
-    def __init__(self, gui_renderer: GUIRenderer, callback_function, previous_states):
+    def __init__(self, gui_renderer: GUIRenderer, callback_function):
         self.callback_function = callback_function
 
         self.gui_renderer = gui_renderer
-        self.slider =  gui_renderer.slider
         self.settings_button = gui_renderer.settings_button
         self.settings_button.set_action(lambda: self.callback_function("settings_menu"))
 
@@ -13,6 +12,5 @@ class GUIController:
         self.back_button.set_action(lambda: self.callback_function("start_menu"))
 
     def update(self, event):
-        self.slider.handle_event(event)
         self.settings_button.handle_event(event)
         self.back_button.handle_event(event)