[mutter] window-actor: Remove public declaration for get_x_window

[Marco Trevisan <marcotrevi src gnome org>]

commit 77fb0a00032f43de0b150a40ca0c1f2505e26895
Author: Marco Trevisan (Treviño) <mail 3v1n0 net>
Date:   Wed Feb 13 02:57:26 2019 +0100

    window-actor: Remove public declaration for get_x_window
    
    meta_window_actor_get_x_window has been removed in commit 422648e2 but has not
    been removed from the header for ages.
    
    https://gitlab.gnome.org/GNOME/mutter/merge_requests/439

 src/meta/meta-window-actor.h | 5 -----
 1 file changed, 5 deletions(-)
---
diff --git a/src/meta/meta-window-actor.h b/src/meta/meta-window-actor.h
index 09f73bcb0..ec35c257e 100644
--- a/src/meta/meta-window-actor.h
+++ b/src/meta/meta-window-actor.h
@@ -23,8 +23,6 @@
 #ifndef META_WINDOW_ACTOR_H_
 #define META_WINDOW_ACTOR_H_
 
-#include <X11/Xlib.h>
-
 #include "clutter/clutter.h"
 #include "meta/compositor.h"
 
@@ -36,9 +34,6 @@ G_DECLARE_DERIVABLE_TYPE (MetaWindowActor,
                           META, WINDOW_ACTOR,
                           ClutterActor)
 
-META_EXPORT
-Window             meta_window_actor_get_x_window         (MetaWindowActor *self);
-
 META_EXPORT
 MetaWindow *       meta_window_actor_get_meta_window      (MetaWindowActor *self);