Kill unneeded call to AC_PROG_SYSCONFTOOL (bug #168206).

--- a/configure.ac.orig	2006-12-30 09:28:52.000000000 -0500
+++ b/configure.ac	2007-02-27 12:13:38.000000000 -0500
@@ -15,7 +15,6 @@
 AC_PROG_INSTALL
 AC_PROG_LN_S
 AC_PROG_MAKE_SET
-AC_PROG_SYSCONFTOOL
 AC_LIBTOOL_DLOPEN
 AM_PROG_LIBTOOL