That will only give you the appearance of fitness, not the effect of it. You'll still be huffing and puffing as you climb the flights of stairs to the office the day the elevator breaks, though being lighter through liposuction will help reduce the difficulty of the task.
What's the going rate on an intelligence implant these days? Having cosmetic surgery to overcome a lack of exercise is like moving your fuel gauge to "Full" so you ever have to buy gas.