Justin Fisher appeared in Passaic County Superior Court Thursday and admitted that on the night of Feb. 23, 2022, he removed Stephanie DeJesus’ body from his Totowa apartment — with the help of his mother, father, and fiancé — and placed the corpse in the trunk of the dead woman’s car. But Fisher, who the state alleged beat DeJesus to death with a blunt object, didn’t admit to killing DeJesus because the state dropped the murder charge against him as part of the plea bargain that he accepted on Thursday. Flanked by his attorney, Alissa Hascup, Fisher pleaded guilty to the lesser charges of des…