Remove gdk_net_wm_supports

This function is totally misnamed, only operates on the default
screen, and has a perfectly fine replacement in
gdk_x11_screen_supports_net_wm_hint.

docs/reference/gdk/gdk3-sections.txt

@@ -954,7 +954,6 @@ gdk_x11_window_foreign_new_for_display
 gdk_x11_window_lookup_for_display
 gdk_x11_lookup_xdisplay
 gdk_x11_get_server_time
-gdk_net_wm_supports
 gdk_x11_screen_supports_net_wm_hint
 gdk_x11_screen_get_window_manager_name
 gdk_x11_screen_get_monitor_output

gdk/gdk.symbols

@@ -236,7 +236,6 @@ gdk_keyval_to_unicode G_GNUC_CONST
 gdk_keyval_to_upper G_GNUC_CONST
 gdk_list_visuals
 gdk_modifier_type_get_type G_GNUC_CONST
-gdk_net_wm_supports
 gdk_notify_startup_complete
 gdk_notify_startup_complete_with_id
 gdk_notify_type_get_type G_GNUC_CONST

gdk/x11/gdkscreen-x11.c

@@ -1449,23 +1449,6 @@ gdk_x11_screen_supports_net_wm_hint (GdkScreen *screen,
   return FALSE;
 }
 
-/**
- * gdk_net_wm_supports:
- * @property: a property atom.
- *
- * This function is specific to the X11 backend of GDK, and indicates
- * whether the window manager for the default screen supports a certain
- * hint from the Extended Window Manager Hints Specification. See
- * gdk_x11_screen_supports_net_wm_hint() for complete details.
- *
- * Return value: %TRUE if the window manager supports @property
- **/
-gboolean
-gdk_net_wm_supports (GdkAtom property)
-{
-  return gdk_x11_screen_supports_net_wm_hint (gdk_screen_get_default (), property);
-}
-
 static void
 refcounted_grab_server (Display *xdisplay)
 {

gdk/x11/gdkx.h

@@ -188,7 +188,6 @@ XID      gdk_x11_screen_get_monitor_output   (GdkScreen *screen,
                                               gint       monitor_num);
 
 #ifndef GDK_MULTIHEAD_SAFE
-gboolean      gdk_net_wm_supports    (GdkAtom    property);
 void          gdk_x11_grab_server    (void);
 void          gdk_x11_ungrab_server  (void);
 #endif