Sad news for yet another classic dining spot. Word went buzzing around social media last night that the Riviera Cafe in Greenwich Village is closing August 31. I've not confirmed it with the Riviera, but the source is credible.Michael Musto wrote on his Facebook page "Riviera Cafe & Sports Bar is closing at the end of the month after 48 years. I recently plugged the place in the Post for its great al fresco people watching. I go virtually every Friday for dinner with Lynn Yaeger and I have the salmon burrito or the corn salad with chicken. I LOVE THIS PLACE and the manager, Jean. It has long been an essential part of a West Village jaunt en route to Marie's, Pieces, Hangar Bar and Rockbar. I pray some generic shithole doesn't go up, or worse a high rise."The Riviera might look like just another sports bar, and a Boston Red Sox bar at that, but it's much more. A classic hangout for hipsters (the old-school kind) since the 1960s, this is where Lou Reed kicked John Cale out of The Velvet Underground More recently, it's been a comfortable and affordable spot, a place to meet friends, an oasis away from the usual ugliness that Greenwich Village has become.