[gedit] build: don't define GDK_VERSION_MIN_REQUIRED

[Sébastien Wilmet <swilmet src gnome org>]

commit 8838f6eb292b739922c87135587585457a13eae5
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Fri Jun 26 10:46:30 2015 +0200

    build: don't define GDK_VERSION_MIN_REQUIRED
    
    It silenced all new deprecation warnings (for functions deprecated after
    the 3.8 version).
    
    Instead of updating the value of the macro, remove it altogether so in
    the future we'll get the new deprecation warnings.

 configure.ac |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 147d31d..42e93c4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -374,8 +374,6 @@ AC_PATH_PROG(GLIB_COMPILE_RESOURCES, glib-compile-resources)
 AC_PATH_PROG(GLIB_GENMARSHAL, glib-genmarshal)
 AC_PATH_PROG(GLIB_MKENUMS, glib-mkenums)
 
-AC_DEFINE(GDK_VERSION_MIN_REQUIRED, GDK_VERSION_3_8, [minimum gdk version])
-
 GNOME_COMPILE_WARNINGS([maximum])
 
 AC_ARG_ENABLE(deprecations,