netifd,lldpd,rpcd,log: use generic service_running

netifd,lldpd,rpcd,log: use generic service_running

commit eb204d14f75c ("base-files: implement generic service_running")
introduced generic service_running so it's not needed to copy&paste same
3 lines over and over again.

I've removed service_running from netifd/network init script as well,
because it was not working properly, looked quite strange and I didn't
understand the intention:

 $ /etc/init.d/network stop
 $ service network running && echo "yes" || echo "nope"
     ( have to wait for 30s )
 Command failed: Request timed out
 yes

Signed-off-by: Petr Štetiar <ynezz@true.cz>