Deleting your account loses any preferences you have set, as well as makes your username available for others to use.
Tukksa n umiḍan-ik ad d-yeglu s usrufḥu n yismenyifen-ik meṛṛa i tesbaduḍ yakan daɣen ad yerr isem n useqdec yella i tmerna n umiḍan i yiseqdacen-nniḍen.