[gtk+] combobox: Remove unused define

[Timm Bäder <baedert src gnome org>]

commit 626868c7baefe7f9eec43a4b6268c40e5ee19525
Author: Timm Bäder <mail baedert org>
Date:   Wed Jan 4 14:04:09 2017 +0100

    combobox: Remove unused define

 gtk/gtkcombobox.c |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)
---
diff --git a/gtk/gtkcombobox.c b/gtk/gtkcombobox.c
index 84dfd9c..4da7cba 100644
--- a/gtk/gtkcombobox.c
+++ b/gtk/gtkcombobox.c
@@ -259,8 +259,6 @@ enum {
 
 static guint combo_box_signals[LAST_SIGNAL] = {0,};
 
-#define SCROLL_TIME  100
-
 /* common */
 
 static void     gtk_combo_box_cell_layout_init     (GtkCellLayoutIface *iface);