The 15-month-old son of former Ultimate Fighting Championship (UFC) star Francis Ngannou, has died. The Cameroonian confirmed the death of his son on his X handle. “Too soon to leave but yet he’s gone,” the Cameroonian wrote. “My little boy, my mate, my partner Kobe was full of life and joy. Now, he’s laying without life. I shouted his name over and over but he’s not responding. “I was my best…