Megyn Kelly called for Sean “Diddy” Combs’ celebrity pals to speak out after the disgraced music producer’s arrest. Combs, 54, was taken into police custody in New York on Monday, September 16. He was later charged with three counts — racketeering conspiracy; s– trafficking by force, fraud or coercion; and transportation to engage in prostitution. He was denied bail and will remain behind bars until his trial. During a recent installment of “The Megyn Kelly Show” podcast, the journalist specifically questioned why Ashton Kutcher, Usher and Justin Bieber — who all have ties to Combs — have fai…