I want to make sure that our workstations that are joined to domain won't
get group policy from the domain controller, because we currently use
Zenworks for group policies. I set the 'Disabled' status of default domain
policy in "Active directory users and computers" tool, but when my
workstation starts, it still reports in eventlog:

Security policy in the Group policy objects has been applied successfully.

So I'm not sure that the policy actually is disabled. Is it safe to
entirely delete the default domain policy?