tmsh modify sys ntp include none

My Load balancers are in production environment,When they were in configuration mode NTP was not working i just entered the command (tmsh modify sys ntp include 'tos maxdist 16') because of that command device is not sync message just gone but cli was showing ntpd -pn NTP in init mode. After i get the right NTP IP address ntpd -pn is showing my device is sync . so if i enter tmsh modify sys ntp include none to revert back the above command right now is there any impact on production environment.