This is a sad day for people who like waking up at 4 a.m. in flop sweat with their hearts going 200 miles-per-hour. Twelve buzz-kill state attorney generals who brought claims that Sparks -- the caffeinated alcoholic energy drink -- was being marketed to underage drinkers and have reached an agreement with booze giant SABMiller to reformulate the recipe so as not to include caffeine or taurine or any energy-drink ingredients. As an of-age Sparks drinker whose enjoyed it on bike rides, at C