[gtk+/gtk-3-22] spinbutton: Remove an unused define

[Daniel Boles <dboles src gnome org>]

commit 34c135be7c01913175455ceb2bdc1156e3f4a9b7
Author: Timm Bäder <mail baedert org>
Date:   Mon Apr 24 16:22:26 2017 +0200

    spinbutton: Remove an unused define

 gtk/gtkspinbutton.c |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkspinbutton.c b/gtk/gtkspinbutton.c
index 277fa2b..e576985 100644
--- a/gtk/gtkspinbutton.c
+++ b/gtk/gtkspinbutton.c
@@ -61,7 +61,6 @@
 #define MAX_TIMER_CALLS       5
 #define EPSILON               1e-10
 #define MAX_DIGITS            20
-#define MIN_ARROW_WIDTH       6
 #define TIMEOUT_INITIAL       500
 #define TIMEOUT_REPEAT        50