Are you asking your home for sale be removed from Trulia?
Do you also want your home for sale removed from Zillow, Cribs, homes.com, realestate.com, hothomes.com, Homes&land, TREB, Yahoo, AOL, KW, Remax and the thousands and thousands of other syndicated sites on which your home will and DOES appear?
Be aware, it's already too late! Once it's on the internet is ALWAYS on the internet.
It is likely, your local property tax data base will reveal if your property is currently for sale.
It really hard to keep a home for sale SECRET. But you don't have to put it on aggregate sites who accept no irresponsibility for data accuracy.
You may be receiving updates from Trulia regarding your home for sale. This may be a service your agent enrolled you in to keep you abreast of what Trulia thinks the real estate market in your area is doing. If this is the case, consult with your real estate agent.
If you want your home to NOT appear on any aggregate real estate sites such as Zillow and Truilai. (this is by the way a GREAT idea for many, many reasons) consult with your agent regarding how to restart.
You can successfully sell your home without putting it on sites like Zillow and Trulia. Again, discuss with your agent the origin of REAL buyers and their maturation. You will conclude exposure on Aggregate real estate websites is a personal violation and only serves to generate advertising dollars and an environment for real estate folks like myself to get some exposure. This however is far removed from getting your home sold.
Best of success in selling your home.