Its only use was removed in the recent change of 2021-04-27 "Major
rewrite of adjust_frame_size", announced in the following thread:
https://lists.gnu.org/r/emacs-devel/2021-04/msg01162.html
* src/gtkutil.c [USE_GTK && !HAVE_GTK3] (gdk_window_get_geometry):
Remove unused macro to pacify -Wunused-macros build warning.
gtk_font_selection_dialog_set_font_name (x, y)
#endif
-#define gdk_window_get_geometry(w, a, b, c, d) \
- gdk_window_get_geometry (w, a, b, c, d, 0)
#define gtk_box_new(ori, spacing) \
((ori) == GTK_ORIENTATION_HORIZONTAL \
? gtk_hbox_new (FALSE, (spacing)) : gtk_vbox_new (FALSE, (spacing)))