Michael Che is roasting the “Roast of Kevin Hart.” The comedian and “Saturday Night Live” star was originally slated to perform at the live Netflix event on Sunday, two sources involved in the production tell Variety , but he ended up pulling out due to scheduling difficulties with “SNL.” (Che was not alone — sources say the roast lineup had undergone quite a bit of shuffling, with several last-minute additions and dropouts.) Now, Che is taking to social media to air some grievances about the event, writing on Instagram , “White guys and Black people joke different. Black guy roast like, ‘look at this n—- shoes!’ White roasts are like, ‘Slavery, math, slain teens, sex crimes, slurs, family secrets.’ White guys don’t give a fuck about they shoes.” Popular on Variety Che’s post appears to reference some of the edgier jokes made by roast host Shane Gillis, Tony Hinchcliffe and others.…