[gtk] calendar: Remove an unused enum

[Matthias Clasen <matthiasc src gnome org>]

commit 3249756648f507aeb7cbfdf9a00383f1f2368e11
Author: Timm Bäder <mail baedert org>
Date:   Wed Feb 5 09:24:31 2020 +0100

    calendar: Remove an unused enum

 gtk/gtkcalendar.c | 7 -------
 1 file changed, 7 deletions(-)
---
diff --git a/gtk/gtkcalendar.c b/gtk/gtkcalendar.c
index 635d60aeed..57631f770f 100644
--- a/gtk/gtkcalendar.c
+++ b/gtk/gtkcalendar.c
@@ -142,13 +142,6 @@ week_of_year (guint year, guint mm, guint dd)
   return week;
 }
 
-enum {
-  ARROW_YEAR_LEFT,
-  ARROW_YEAR_RIGHT,
-  ARROW_MONTH_LEFT,
-  ARROW_MONTH_RIGHT
-};
-
 enum {
   MONTH_PREV,
   MONTH_CURRENT,