Saturday morning TV may soon have fewer ads for cookies, sugary drinks, and sweetened cereal, if Kraft Foods follows through on a plan to curb advertising of such foods to children 6 to 11 years old. Kraft said it will phase out all TV, radio and print ads targeted to the group for products such as Oreo Cookies, original Pebbles Cereal, and Kool-Aid and Capri Sun Drinks.