[gtk] calendar: Remove unused struct member

[Timm Bäder <baedert src gnome org>]

commit c2c1acc73ee7bed81339950698c8b30fe1dd40ed
Author: Timm Bäder <mail baedert org>
Date:   Fri Nov 9 20:18:13 2018 +0100

    calendar: Remove unused struct member

 gtk/gtkcalendar.c | 2 --
 1 file changed, 2 deletions(-)
---
diff --git a/gtk/gtkcalendar.c b/gtk/gtkcalendar.c
index 643b86e5b9..ae4b05702a 100644
--- a/gtk/gtkcalendar.c
+++ b/gtk/gtkcalendar.c
@@ -188,8 +188,6 @@ struct _GtkCalendarPrivate
 {
   GtkCalendarDisplayOptions display_flags;
 
-  gchar grow_space [32];
-
   gint  month;
   gint  year;
   gint  selected_day;