How do I remove Display Name from Create an Account Dialogue box?

Summary:

Customer Portal: Create an Account: Remove Display Name

Content (required):

I have removed the display name input from Standard.php and it is still showing up in the Create an Account dialogue box that pops up when clicking on the AccountDropdown in the header. How do I get rid of Display Name from that dialog box?

Version (include the version you are using, if applicable):

21B soon to be 21C

Code Snippet (add any code snippets that support your topic, if applicable):

<rn:widget path="login/AccountDropdown" subpages="#rn:msg:ACCOUNT_OVERVIEW_LBL# > account/overview"

        sub:input_Contact.Emails.PRIMARY.Address:label_input="#rn:msg:EMAIL_ADDR_LBL#"