[gedit-plugins] build: don't define GDK_VERSION_MIN_REQUIRED

[Sébastien Wilmet <swilmet src gnome org>]

commit b2d4e0313ee68c7447df0a01c3b211e2b1f4f56f
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Mon Jul 20 13:20:45 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 876ba59..85fadbb 100644
--- a/configure.ac
+++ b/configure.ac
@@ -269,8 +269,6 @@ AC_SUBST(PLUGINS)
 AC_PATH_PROG(GLIB_COMPILE_RESOURCES, glib-compile-resources)
 AC_PATH_PROG(GLIB_GENMARSHAL, glib-genmarshal)
 
-AC_DEFINE(GDK_VERSION_MIN_REQUIRED, GDK_VERSION_3_8, [minimum gdk version])
-
 YELP_HELP_INIT
 
 AC_ARG_ENABLE(deprecations,