[mutter] clutter/actor: Remove two unused functions in private header

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit b1700c3f7b59e75d82ae4dea98c55c8c44e26f3a
Author: Jonas Dreßler <verdre v0yd nl>
Date:   Mon Oct 19 12:41:57 2020 +0200

    clutter/actor: Remove two unused functions in private header
    
    Those two functions are nowhere to be found in our code, so remove those
    function headers which were probably forgot during another cleanup.
    
    https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1528

 clutter/clutter/clutter-actor-private.h | 4 ----
 1 file changed, 4 deletions(-)
---
diff --git a/clutter/clutter/clutter-actor-private.h b/clutter/clutter/clutter-actor-private.h
index 545e582999..01caa0296c 100644
--- a/clutter/clutter/clutter-actor-private.h
+++ b/clutter/clutter/clutter-actor-private.h
@@ -244,10 +244,6 @@ const gchar *                   _clutter_actor_get_debug_name
 void                            _clutter_actor_push_clone_paint                         (void);
 void                            _clutter_actor_pop_clone_paint                          (void);
 
-void                            _clutter_actor_shader_pre_paint                         (ClutterActor *actor,
-                                                                                         gboolean      
repeat);
-void                            _clutter_actor_shader_post_paint                        (ClutterActor 
*actor);
-
 ClutterActorAlign               _clutter_actor_get_effective_x_align                    (ClutterActor *self);
 
 void                            _clutter_actor_handle_event                             (ClutterActor       
*actor,