As Rick noted below, your listing agent or broker can remove the home from Trulia. If that's not possible however, you can report the error to Trulia from the property page. While on that page, click on the 'More' tab you find under the listing photos. Then select 'Report an error'. Use the form to indicate that the property is sold and submit the message.
Alternatively, if the two methods above don't work, you can contact our Customer Service team directly for assistance - either by phone at 888-466-3501 Monday - Friday 7am to 4pm PST, or by email via the link below.