Metallica star Lars Ulrich has given up cocaine - thanks to Oasis rocker Noel Gallagher.The drummer decided to quit the drug after watching Gallagher successfully battle his cocaine demons in the 1990s.Ulrich says, "A couple of years ago I was like, 'You know? Enough of this. I don't need it'. It was literally something that happened one morning, like 'Y'know? F**k that'."I was very impressed with Noel Gallagher. As you know, I'm an Oasis fanatic, and Noel was like 'You know what? No more cocaine!' and I thought, 'If he can do it, everybody else can do it'."I had my fun with it, it was always more of a social thing. We were never like rolling around and spending days in bathroom stalls, and peeking out the keyholes of doors for days".