Just be careful. Vdroop is actually needed to keep CPU voltages in allowed area wihle changing CPU load. Eliminating Vdroop completely may yield to very strange stability problems (hangups, blue screens and so on), especially in load transitions.
If VCore is near maximum allowed, then load>idle transition generates positive voltage spike on CPU; if there's no Vdroop reserve, then this spike may go over limit.
If VCore is near minimum allowed, then idle>load transition generates negative voltage spike; if there's no Vdroop reserve, then this spike may go under limit.
But if you don't observe any instabilities and you can lower power consumption this way, then why not