[libgrss] configure: drop unused GLIB_PREFIX

[Igor Gnatenko <ignatenko src gnome org>]

commit d17675d7bb8b09b568154c788efc0eeacc0322a3
Author: Igor Gnatenko <ignatenko src gnome org>
Date:   Wed Jul 15 06:40:10 2015 +0300

    configure: drop unused GLIB_PREFIX
    
    it was introduced in ebc238d8d183622438d4542b3d533137a80295ff and it
    was a mistake
    
    Signed-off-by: Igor Gnatenko <ignatenko src gnome org>

 configure.ac |    3 ---
 1 files changed, 0 insertions(+), 3 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 5b94bb7..f6a1133 100644
--- a/configure.ac
+++ b/configure.ac
@@ -66,9 +66,6 @@ PKG_CHECK_MODULES([LIBGRSS],[
 ##################################################
 GTK_DOC_CHECK([1.9])
 
-GLIB_PREFIX="`$PKG_CONFIG --variable=prefix glib-2.0`"
-AC_SUBST(GLIB_PREFIX)
-
 GOBJECT_INTROSPECTION_CHECK([1.30.0])
 
 AC_OUTPUT([