Delete email addresses from contact record

Currently, if I have a contact with an email address entered in the email field, I cannot delete the email and leave the email field blank.

Sometimes an email address is incorrect or old and it bounces. I don’t want to use that email address anymore, and I don’t want any of my present or future colleagues wasting their time trying to use that email address.

Thus, if I can’t find a good email address for a contact, I want to leave the email field for that contact blank.

Thanks.