[Nutrox]

 
Normally you can't use removeMovieClip() on movie clips that you place on the Stage while authoring the movie. However, swap the movie clip depth to a positive value and removeMovieClip() will work fine!

function deleteClip(target:MovieClip):Void {
   var d:Number = target._parent.getNextHighestDepth();
   target.swapDepths(d);
   target.removeMovieClip();
}
 
// myMovieClip is already on the Stage
deleteClip(myMovieClip);