A subdomain is an additional part of your primary domain. Please, follow this tutorial to remove a subdomain in cPanel.
1. Log in to your cPanel account.
2. In the Domains section, click on Domains.
3. Locate the Subdomain you want to remove and click Manage next to it. 
4. Scroll down, click on Remove Domain, and confirm the removal.
You should see a message that your Subdomain has been removed.
1. Log in to your cPanel account. 2. In the Domains section, click on Redirects. 3. Under Add...
1. Log in to your cPanel account. 2. In the Domains section, click on Redirects. 3. Scroll down...
An Alias domain, formerly known as a parked domain, lets you create a mirror of your primary...
1. Log in to your cPanel account. 2. In the Domains section, click on Domains. 3. In the List...
Before adding the addon domain, point your addon domain nameservers to your primary domain...
