Four men were shot and wounded by gunfire inside a notorious Queens nightclub with a track record of gun violence, cops said.  Bullets turned the dance floor inside Amadeus nightclub in Elmhurst into a bloodbath around 3:40 a.m. on Sunday, according to the NYPD.  When cops arrived, they found two 28-year-old men who’d been hit by gunfire – one who had been grazed in the head and another struck in the face, police said. Four men were shot around 3:40 a.m. at the Amadeus night club in Elmhurst, cops said. Google Maps The two were taken to Elmhurst Hospital by EMS, where they were in stable condition, according to authorities.…