The owners of a popular bar said Tuesday they would accept a $2.1 million buyout from the University of Wisconsin-Madison and drop a lawsuit seeking to stop the school from seizing their property for a new music building. The university agreed to pay Marc and Eric Fortney, the owners of Brothers Bar & Grill, within 30 days to acquire the last property it needs to construct a privately funded $43 million School of Music building. The decision to drop the lawsuit came a day before the case was scheduled to go to trial in Dane County Circuit Court, and after a monthslong public relations battle between the bar owners and top university officials. Left unresolved are how much the bar will be paid to relocate and how soon that will happen.