In order to do a full eautoreconf we need to remove the double declarations of config.h in configure.in

Bug: https://bugs.gentoo.org/874714
Bug: https://bugs.gentoo.org/898458
Patch has been sent to upstream via mail

#  Pascal Jäger <pascal.jaeger@leimstift.de> (2023-09-18)

--- a/autoconf/configure.in
+++ b/autoconf/configure.in
@@ -60,7 +60,6 @@ AC_PATH_XTRA
 AC_CHECK_HEADERS(sys/wait.h sys/time.h)
 AC_CHECK_HEADERS(sys/statvfs.h sys/vfs.h sys/mount.h ustat.h)
 AC_CHECK_HEADERS(machine/soundcard.h linux/soundcard.h linux/radio.h)
-AC_CONFIG_HEADER(config.h)
 
 dnl# Check for X
 
@@ -120,8 +119,6 @@ AC_SUBST(with_afterdir)
 
 dnl# Write results
 
-AC_CONFIG_HEADER(config.h)
-
 dnl# Common parts of the Makefile
 MAKEFILEDEFINES=./autoconf/Makefile.defines
 MAKEFILECOMMON=./autoconf/Makefile.common