dhcpd, removed unused variable and reformatted
dhcpd, removed unused variable and reformatted

stmt_subclass was a little too cluttered so I changed it to multiple
lines for readability.  I had also introduced an unused lens sep_to_ncl
which I removed.

mlichvar/augeas,mlichvar/augeas,jjlin/augeas,jasperla/augeas,mchf/augeas,lutter/augeas,jtopjian/augeas,kunkku/augeas,pevalme/augeas,raphink/augeas,manandbytes/augeas,dafugg/augeas,MikaelSmith/augeas,lutter/augeas,ptoscano/augeas,dafugg/augeas,pevalme/augeas,kunkku/augeas,kunkku/augeas,ptoscano/augeas,manandbytes/augeas,lutter/augeas,jjlin/augeas,MikaelSmith/augeas,jasperla/augeas,raphink/augeas,mlichvar/augeas,hercules-team/augeas,jtopjian/augeas,ptoscano/augeas,mchf/augeas,pevalme/augeas,hercules-team/augeas,jjlin/augeas,GeoffWilliams/augeas,dafugg/augeas,GeoffWilliams/augeas