Remove ntp.conf-specific keyword. List of coreos ntp srvs applies to both ntp clients.
Remove ntp.conf-specific keyword. List of coreos ntp srvs applies to both ntp clients.

mjg59/docs,jonboulle/docs,marineam/coreos-docs,robszumski/docs,bq-xiao/docs,atxwebs/docs,endocode/coreos-docs,joshix/docs,coreos/docs,wli6/docs,hkjn/docs-1,michelleN/docs