not needed since:

we would be better off building on the given OS/arch instead of playing with preprocessor directives;
all releng tests are gathered in libisoburn tree

releng/releng_build_os

@@ -1,41 +0,0 @@
-#!/bin/sh
-
-set -e
-
-cd ..
-
-if [ ! -x configure ]; then
- printf "\n*** please run ./bootstrap first.\n"
- exit 1
-fi
-
-build()
-{
- for F in ${1}
- do
-  make clean
-  clear
-  printf "\n *** building with: %s\n" CPPFLAGS=-D${F}
-  sleep 1
-  # libcdio is not autodetected by default; should be available everywhere
-  CPPFLAGS=-D${F} ./configure --enable-libcdio; make 2> releng/libburn.${F}.log
-  make clean
- done
-}
-
-OS=`uname -o`
-
-case ${OS} in
-GNU/Linux)
- printf "OS: %s\n" ${OS}
- sleep 1
- build  "__linux Libburn_use_sg_dummY Libburn_use_libcdiO"
-;;
-*)
- printf "Unknown OS: %s\n" ${OS}
- exit 1
-;;
-esac
-
-# just in case
-unset CPPFLAGS