[gtk+] Drop gdkvisual.h from the installed headers.

[Matthias Clasen <matthiasc src gnome org>]

commit 29ffecb39c8cb5bf6b1cf98f58914497a954fe78
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Oct 31 22:06:43 2017 -0400

    Drop gdkvisual.h from the installed headers.

 gdk/gdk-autocleanup.h |    1 -
 gdk/gdk.h             |    1 -
 gdk/meson.build       |    1 -
 3 files changed, 0 insertions(+), 3 deletions(-)
---
diff --git a/gdk/gdk-autocleanup.h b/gdk/gdk-autocleanup.h
index b867e01..20c048f 100644
--- a/gdk/gdk-autocleanup.h
+++ b/gdk/gdk-autocleanup.h
@@ -32,7 +32,6 @@ G_DEFINE_AUTOPTR_CLEANUP_FUNC(GdkFrameClock, g_object_unref)
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GdkGLContext, g_object_unref)
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GdkKeymap, g_object_unref)
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GdkScreen, g_object_unref)
-G_DEFINE_AUTOPTR_CLEANUP_FUNC(GdkVisual, g_object_unref)
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GdkWindow, g_object_unref)
 
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GdkEvent, gdk_event_free)
diff --git a/gdk/gdk.h b/gdk/gdk.h
index 8bed080..945f8f8 100644
--- a/gdk/gdk.h
+++ b/gdk/gdk.h
@@ -60,7 +60,6 @@
 #include <gdk/gdkselection.h>
 #include <gdk/gdkthreads.h>
 #include <gdk/gdktypes.h>
-#include <gdk/gdkvisual.h>
 #include <gdk/gdkvulkancontext.h>
 #include <gdk/gdkwindow.h>
 
diff --git a/gdk/meson.build b/gdk/meson.build
index 7f84fcb..02557cc 100644
--- a/gdk/meson.build
+++ b/gdk/meson.build
@@ -72,7 +72,6 @@ gdk_public_headers = files([
   'gdkselection.h',
   'gdkthreads.h',
   'gdktypes.h',
-  'gdkvisual.h',
   'gdkvulkancontext.h',
   'gdkwindow.h',
 ])