Newbee my self but of what I've read your to avoid streess when in flowering that's why you do transplanting and LST before flowering you don't want to turn it into a hermaphrodite
If you want to - the main reason for it is to improve airflow in the grow room and it doesn't look too cramped. It will also get rid of the bud sites lower down to make your trim easier. Personally, i'd leave it.