You can disable your professional lender profile by emailing mortgagesupport@zillowgroup.com.
Doing so will remove your profile from Zillow and Trulia, but it does not permanently delete your profile information or reviews. Lender reviews are tied to NMLS IDs, so your old reviews will appear on your lender profile page if you re-activate your profile at a future date. If you decide to make a new profile, past reviews will repopulate on the new page automatically.