Getting the info removed is not easy sometimes.
I'd spread the word to use actual real estate professionals' sites rather than ones where the correctness of the data is not as important as gathering and selling your name and email to the highest bidders.
(Please note: when you choose an answer as a Best Answer, or at least give a thumbs up, it helps those who answer questions here.)
I have seen this question come up a few times already by both, buyers & sellers. It will depend on how the listing agent posted. If the listing agent had approved syndication then all postings to the local MLS will syndicate to Trulia (& it's now theirs). This means that you will need to contact trulia directly to see if they will have the pictures removed. Good luck.