Deletion of sub domain name

[cynga]

After deletion, A message "Apache is running normally" is shown when i visit the website. How can i make it to disappear?
I tried to create a sub domain, but later decided to delete it for testing. but the subdomain refuse to go off.

Thank you for you help.

 

[zEitEr]

Wait up to 24-48 hours to get DNS updated and DNS-cache cleared.