Remove changes about ntp.conf in kickstart
Remove changes about ntp.conf in kickstart

We actually cannot configure ntp.conf over kickstart today, cause
now we use NTP puppet module that do so and do it later than kickstart,
that lead to fully rewrite NTP configuration. So, that strings about
NTP in kickstart don't have sense anymore.

Change-Id: I1ac0b1bee9e28129c4644fd43d3b9b8470dca697
Related-Bug: 1298360

ddepaoli3/fuel-main-dev,huntxu/fuel-main,stackforge/fuel-main,dancn/fuel-main-dev,Fiware/ops.Fuel-main-dev,AnselZhangGit/fuel-main,eayunstack/fuel-main,dancn/fuel-main-dev,AnselZhangGit/fuel-main,Fiware/ops.Fuel-main-dev,eayunstack/fuel-main,ddepaoli3/fuel-main-dev,SergK/fuel-main,teselkin/fuel-main,eayunstack/fuel-main,Fiware/ops.Fuel-main-dev,zhaochao/fuel-main,SergK/fuel-main,zhaochao/fuel-main,AnselZhangGit/fuel-main,ddepaoli3/fuel-main-dev,teselkin/fuel-main,Fiware/ops.Fuel-main-dev,stackforge/fuel-main,huntxu/fuel-main,dancn/fuel-main-dev,huntxu/fuel-main,zhaochao/fuel-main,zhaochao/fuel-main,AnselZhangGit/fuel-main,SergK/fuel-main,SmartInfrastructures/fuel-main-dev,zhaochao/fuel-main,ddepaoli3/fuel-main-dev,teselkin/fuel-main,SmartInfrastructures/fuel-main-dev,teselkin/fuel-main,SmartInfrastructures/fuel-main-dev,SmartInfrastructures/fuel-main-dev,stackforge/fuel-main,dancn/fuel-main-dev