[gtk+] Remove an unused define

[Matthias Clasen <matthiasc src gnome org>]

commit a29c831f3c44cecc992e620180f43d91ed93b913
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Jan 11 15:14:55 2015 -0500

    Remove an unused define

 configure.ac |    5 -----
 1 files changed, 0 insertions(+), 5 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 0623542..eae81cc 100644
--- a/configure.ac
+++ b/configure.ac
@@ -501,11 +501,6 @@ else
   fi
 fi
 
-
-AC_DEFINE_UNQUOTED(GTK_COMPILED_WITH_DEBUGGING, "${enable_debug}",
-                   [Define if debugging is enabled])
-
-
 # Build time sanity check...
 AM_SANITY_CHECK