On Super Bowl Sunday, just before the game started, we stopped by Pequeña for dinner, thinking it would be easy to get a table since, as far as we could remember, the restaurant didn’t have a tv. It was closed. We figured it was a one-time deal because of the game. But then we read in DNAinfo yesterday it went out of business because of a change in partnership and decrease in customers. The space at 601 Washington Avenue in Prospect Heights will become a Korean restaurant. There are no plans to close the original location, at 86 South Portland Avenue in Fort Greene, according to DNA. We really liked the margaritas and enchiladas — and the elbow room – at this location and will miss it. Curiously, this is not the first restaurant owner and actress Chelsea Altman has shuttered recently. Maggie Brown in Clinton Hill shut down last month, as we reported at the time. Altman also...…