It’s still there and open. I was returning from Shanghai yesterday and poked my head in, as my connecting flight was out of gate 127, and the receptionist looked at my boarding pass and said “go to the Polaris lounge, you don’t want to be here, we don’t even have a bathroom”. The food and wine selection in the Polaris lounge is better than anything else in Terminal C, including the Classified restaurant, IMHO.