forked from Imagelibrary/rtems
* libnetworking/pppd/Makefile.am, libnetworking/rtems_servers/Makefile.am, libnetworking/rtems_telnetd/Makefile.am: Remove build-variant support.
* libnetworking/pppd/Makefile.am, libnetworking/rtems_servers/Makefile.am, libnetworking/rtems_telnetd/Makefile.am: Remove build-variant support.