TBR syncbase: reduce NTP error logging
TBR syncbase: reduce NTP error logging

Change-Id: I8b3e0afb863fc0ebf6b1c0bdaf1182d0a588615e

vanadium/go.ref,vanadium/go.ref,vanadium/go.ref,vanadium/go.ref,vanadium/go.ref,vanadium/go.ref