[gtk+] gdk: Remove gdk_flush()

[Benjamin Otte <otte src gnome org>]

commit f4ec6290f88e0c3ce2fdbb9bb702999f6584f694
Author: Benjamin Otte <otte redhat com>
Date:   Fri Nov 17 08:35:25 2017 +0100

    gdk: Remove gdk_flush()
    
    If you need to flush a display, use gdk_display_flush().
    
    There is never a need to flush displays you don't know about.

 docs/reference/gdk/gdk4-sections.txt |    1 -
 gdk/gdkdisplay.c                     |   24 ------------------------
 gdk/gdkdisplay.h                     |    2 --
 3 files changed, 0 insertions(+), 27 deletions(-)
---
diff --git a/docs/reference/gdk/gdk4-sections.txt b/docs/reference/gdk/gdk4-sections.txt
index 913b365..daef793 100644
--- a/docs/reference/gdk/gdk4-sections.txt
+++ b/docs/reference/gdk/gdk4-sections.txt
@@ -80,7 +80,6 @@ gdk_display_device_is_grabbed
 gdk_display_beep
 gdk_display_sync
 gdk_display_flush
-gdk_flush
 gdk_display_close
 gdk_display_is_closed
 gdk_display_get_event
diff --git a/gdk/gdkdisplay.c b/gdk/gdkdisplay.c
index a189892..5580c93 100644
--- a/gdk/gdkdisplay.c
+++ b/gdk/gdkdisplay.c
@@ -570,30 +570,6 @@ gdk_display_put_event (GdkDisplay     *display,
   gdk_display_put_event_nocopy (display, gdk_event_copy (event));
 }
 
-/**
- * gdk_flush:
- *
- * Flushes the output buffers of all display connections and waits
- * until all requests have been processed.
- *
- * This is rarely needed by applications.
- */
-void
-gdk_flush (void)
-{
-  GSList *list, *l;
-
-  list = gdk_display_manager_list_displays (gdk_display_manager_get ());
-  for (l = list; l; l = l->next)
-    {
-      GdkDisplay *display = l->data;
-
-      GDK_DISPLAY_GET_CLASS (display)->sync (display);
-    }
-
-  g_slist_free (list);
-}
-
 static void
 generate_grab_broken_event (GdkDisplay *display,
                             GdkWindow  *window,
diff --git a/gdk/gdkdisplay.h b/gdk/gdkdisplay.h
index 12ce04f..d8aad24 100644
--- a/gdk/gdkdisplay.h
+++ b/gdk/gdkdisplay.h
@@ -56,8 +56,6 @@ GDK_AVAILABLE_IN_ALL
 void        gdk_display_sync               (GdkDisplay  *display);
 GDK_AVAILABLE_IN_ALL
 void        gdk_display_flush              (GdkDisplay  *display);
-GDK_AVAILABLE_IN_ALL
-void        gdk_flush                      (void);
 
 GDK_AVAILABLE_IN_ALL
 void        gdk_display_close                  (GdkDisplay  *display);