[gtk/wip/otte/listview: 1571/1575] wayland: Remove function declaration for nonexisting function

[Benjamin Otte <otte src gnome org>]

commit ee49a38d30a6dda10e820b1e1e4fe67e523aba9b
Author: Benjamin Otte <otte redhat com>
Date:   Wed Feb 6 11:55:33 2019 +0100

    wayland: Remove function declaration for nonexisting function

 gdk/wayland/gdkwaylandsurface.h | 3 ---
 1 file changed, 3 deletions(-)
---
diff --git a/gdk/wayland/gdkwaylandsurface.h b/gdk/wayland/gdkwaylandsurface.h
index d236007900..51f39fd052 100644
--- a/gdk/wayland/gdkwaylandsurface.h
+++ b/gdk/wayland/gdkwaylandsurface.h
@@ -45,9 +45,6 @@ typedef struct _GdkWaylandSurfaceClass GdkWaylandSurfaceClass;
 GDK_AVAILABLE_IN_ALL
 GType                    gdk_wayland_surface_get_type             (void);
 
-GDK_AVAILABLE_IN_ALL
-GdkSurface *              gdk_wayland_surface_new_subsurface       (GdkDisplay            *display,
-                                                                    const GdkRectangle    *position);
 GDK_AVAILABLE_IN_ALL
 struct wl_surface       *gdk_wayland_surface_get_wl_surface       (GdkSurface *surface);