[gtk+] levelbar: Remove unused define

[Timm Bäder <baedert src gnome org>]

commit 911d71ae7a01ecdbf75a6264306ac7a05dd58fdb
Author: Timm Bäder <mail baedert org>
Date:   Mon Apr 3 15:56:36 2017 +0200

    levelbar: Remove unused define

 gtk/gtklevelbar.c |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)
---
diff --git a/gtk/gtklevelbar.c b/gtk/gtklevelbar.c
index b16d8f4..90b6f47 100644
--- a/gtk/gtklevelbar.c
+++ b/gtk/gtklevelbar.c
@@ -141,8 +141,6 @@
 
 #include "fallback-c89.c"
 
-#define DEFAULT_BLOCK_SIZE 3
-
 enum {
   PROP_VALUE = 1,
   PROP_MIN_VALUE,