var maxIndex:uint = numChildren;

for (var i:uin = 0; i < maxIndex; i++) {

    var obj:DisplayObject = getChildAt(0);

    if (!(obj is MovieClip)) continue;

    var mc:MovieClip = obj as MovieClip;

    if (mc.name === "name") {

        removeChild(mc);

        break;

    }

}