50 Centis taking legal action against his ex Daphne Joyover sexual assault allegations she made against the rapper after being dragged into Sean “Diddy” Combs’ court drama, RadarOnline.com has learned. The chart-topping performer, whose real name is Curtis James Jackson III, filed a lawsuit for defamation. 50 Cent is seeking damages for over $1 million and a court order to force her to remove the post and refrain from other alleged defamatory remarks online. As we previously reported, 50 Cent revealed that he was seeking sole custody of his 11-year-old son shared with Joy due to the allegation…