Nameservers remains after deleting domain

I added the nameservers
ns1.unaux.com
ns2.unaux.com

to my domain quelib.com
and I never added it in my addon domain but now after changing the nameservers it's still pointing to unaux.com
https://whois.com/whois/quelib.com.
I have deleted all my domains in my cpanel still nothing
Email: quelib.app@gmail.com
Username: unaux_30111048
Domain: http://quelib.unaux.com

So please can you guys help me out here

@Admin