How to hide SSN when Adding a Family Dependent on Workflow Email Only

Summary

NUX emails contain NID/SSN information.

Content

We don't want emails to contain this information. We do need the employees to submit this info through the Family and Dependent Contact flow as part of our benefits process, so we don't want to disable this section or prevent the entry of this info. (We need it for our benefits info.) However, we don't want this info to be contained in/sent in an email. 

Can we hide this piece of data from the email only, i.e. modify the rtf to either remove or display a conditional message that will indicate an NID has change but doesn't put the NID in the email?