[gtk/wip/chergert/quartz4u] macos: remove dead code

[Christian Hergert <chergert src gnome org>]

commit bcec9fd325281048e04aa5bbd7594518a227b62c
Author: Christian Hergert <chergert redhat com>
Date:   Fri May 29 17:17:05 2020 -0700

    macos: remove dead code

 gdk/macos/gdkmacossurface-private.h |  3 ---
 gdk/macos/gdkmacossurface.c         | 17 -----------------
 2 files changed, 20 deletions(-)
---
diff --git a/gdk/macos/gdkmacossurface-private.h b/gdk/macos/gdkmacossurface-private.h
index 1c5a4f6188..83bb8ea80d 100644
--- a/gdk/macos/gdkmacossurface-private.h
+++ b/gdk/macos/gdkmacossurface-private.h
@@ -97,9 +97,6 @@ void               _gdk_macos_surface_resize                  (GdkMacosSurface
                                                                int                 height);
 void               _gdk_macos_surface_update_fullscreen_state (GdkMacosSurface    *self);
 void               _gdk_macos_surface_update_position         (GdkMacosSurface    *self);
-void               _gdk_macos_surface_damage_cairo            (GdkMacosSurface    *self,
-                                                               cairo_surface_t    *surface,
-                                                               cairo_region_t     *painted);
 void               _gdk_macos_surface_show                    (GdkMacosSurface    *self);
 void               _gdk_macos_surface_thaw                    (GdkMacosSurface    *self,
                                                                gint64              
predicted_presentation_time,
diff --git a/gdk/macos/gdkmacossurface.c b/gdk/macos/gdkmacossurface.c
index 03a3d9afc4..d42ca3aa40 100644
--- a/gdk/macos/gdkmacossurface.c
+++ b/gdk/macos/gdkmacossurface.c
@@ -651,23 +651,6 @@ _gdk_macos_surface_update_position (GdkMacosSurface *self)
     }
 }
 
-void
-_gdk_macos_surface_damage_cairo (GdkMacosSurface *self,
-                                 cairo_surface_t *surface,
-                                 cairo_region_t  *painted)
-{
-  NSView *view;
-
-  g_return_if_fail (GDK_IS_MACOS_SURFACE (self));
-  g_return_if_fail (surface != NULL);
-
-  view = [self->window contentView];
-
-  if (GDK_IS_MACOS_CAIRO_VIEW (view))
-    [(GdkMacosCairoView *)view setCairoSurface:surface
-                                    withDamage:painted];
-}
-
 void
 _gdk_macos_surface_thaw (GdkMacosSurface *self,
                          gint64           presentation_time,