[gconf] configure.in: fix autoreconf with automake-1.13

[Ray Strode <halfline src gnome org>]

commit 4de9edd2b50686df32ae2b6d69b14c087c5aa73f
Author: Marko Lindqvist <cazfi74 gmail com>
Date:   Mon Jan 7 03:44:39 2013 +0200

    configure.in: fix autoreconf with automake-1.13
    
    Remove long obsolete AM_PROG_CC_STDC. There's already proper
    AC_PROG_CC before it, and automake-1.13 errors out upon seeing it.
    
    Signed-off-by: Marko Lindqvist <cazfi74 gmail com>
    
    https://bugzilla.gnome.org/show_bug.cgi?id=691264

 configure.in |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/configure.in b/configure.in
index 64f4f13..69a57e6 100644
--- a/configure.in
+++ b/configure.in
@@ -39,7 +39,6 @@ fi
 AC_PROG_CC
 AC_PROG_CXX
 AC_ISC_POSIX
-AM_PROG_CC_STDC
 AC_HEADER_STDC
 AC_LIBTOOL_WIN32_DLL
 AM_PROG_LIBTOOL