[gtk+] Drop GdkScreen from public api

[Matthias Clasen <matthiasc src gnome org>]

commit a16a25151c99a42efc3e7d30c950d67de6074fbe
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Nov 1 19:28:57 2017 -0400

    Drop GdkScreen from public api
    
    It is still used by some of the backends, so keep the
    files around.

 gdk/gdk-autocleanup.h     |    1 -
 gdk/gdk.h                 |    1 -
 gdk/gdkapplaunchcontext.h |    1 -
 gdk/gdkscreen.h           |    2 --
 gdk/meson.build           |    1 -
 5 files changed, 0 insertions(+), 6 deletions(-)
---
diff --git a/gdk/gdk-autocleanup.h b/gdk/gdk-autocleanup.h
index 20c048f..4941827 100644
--- a/gdk/gdk-autocleanup.h
+++ b/gdk/gdk-autocleanup.h
@@ -31,7 +31,6 @@ G_DEFINE_AUTOPTR_CLEANUP_FUNC(GdkDragContext, g_object_unref)
 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(GdkWindow, g_object_unref)
 
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GdkEvent, gdk_event_free)
diff --git a/gdk/gdk.h b/gdk/gdk.h
index 945f8f8..5ec87bb 100644
--- a/gdk/gdk.h
+++ b/gdk/gdk.h
@@ -55,7 +55,6 @@
 #include <gdk/gdkproperty.h>
 #include <gdk/gdkrectangle.h>
 #include <gdk/gdkrgba.h>
-#include <gdk/gdkscreen.h>
 #include <gdk/gdkseat.h>
 #include <gdk/gdkselection.h>
 #include <gdk/gdkthreads.h>
diff --git a/gdk/gdkapplaunchcontext.h b/gdk/gdkapplaunchcontext.h
index 739fad4..9c9d739 100644
--- a/gdk/gdkapplaunchcontext.h
+++ b/gdk/gdkapplaunchcontext.h
@@ -28,7 +28,6 @@
 #include <gio/gio.h>
 #include <gdk/gdkversionmacros.h>
 #include <gdk/gdktypes.h>
-#include <gdk/gdkscreen.h>
 
 G_BEGIN_DECLS
 
diff --git a/gdk/gdkscreen.h b/gdk/gdkscreen.h
index 07dac9a..c6a99fc 100644
--- a/gdk/gdkscreen.h
+++ b/gdk/gdkscreen.h
@@ -38,10 +38,8 @@ G_BEGIN_DECLS
 #define GDK_IS_SCREEN(object)      (G_TYPE_CHECK_INSTANCE_TYPE ((object), GDK_TYPE_SCREEN))
 
 
-GDK_AVAILABLE_IN_ALL
 GType        gdk_screen_get_type              (void) G_GNUC_CONST;
 
-GDK_AVAILABLE_IN_ALL
 GdkDisplay * gdk_screen_get_display           (GdkScreen   *screen);
 
 G_END_DECLS
diff --git a/gdk/meson.build b/gdk/meson.build
index c14a8a6..9857dc3 100644
--- a/gdk/meson.build
+++ b/gdk/meson.build
@@ -66,7 +66,6 @@ gdk_public_headers = files([
   'gdkproperty.h',
   'gdkrectangle.h',
   'gdkrgba.h',
-  'gdkscreen.h',
   'gdkseat.h',
   'gdkselection.h',
   'gdkthreads.h',