Fedora 19 get back eth0

1) yum remove biosdevname
2) add net.ifnames=0 to GRUB_CMDLINE_LINUX in /etc/default/grub
3) grub2-mkconfig -o /boot/grub2/grub.cfg
4) rename /etc/sysconfig/network-scripts/ifcfg-whatever to ifcfg-eth0
5) change to NAME=eth0 inside ifcfg-eth0

Thanks to Jann5s