Diddy’s downfall is likely to get worse in the wake of the shocking video showing him assaulting his ex-girlfriend, Casandra “Cassie” Ventura, with New York City’s mayor weighing in on the controversy. Eric Adams has discussed the possibility of revoking the embattled music mogul’s key to the city following the bombshell footage captured in 2016, RadarOnline.com has learned. Adams bestowed Diddy the honor in September 2023, just eight months before the disturbing clip showing him kicking and dragging Cassie in a hotel from nearly a decade ago was released. When the mayor was asked about potent…