NTP server cleanup
NTP server cleanup

resolves openbmc/openbmc-test-automation#1875

Change-Id: If00814efb907495acb0b4077357116a5bac529fd
Signed-off-by: Sivas SRR <012927925d910b449e3c54b956422d549bbe0ff0@in.ibm.com>

openbmc/openbmc-test-automation,openbmc/openbmc-test-automation