It CAN'T be trimmed out. Twostroke's idea is the easiest. One way to check the severity of the problem is to look down the airplane from the tail end and eyeball the horizontal stab and the wing. If it looks "off" then fix it. Anybody that tells you to go ahead and fly it is just plain out giving bad advice. When you're a beginner, you need every advantage. A clean flying airplane is a big advantage.