Amazon’s deal to buy Roomba maker iRobot is off, the companies announced today , after iRobot said the deal has “no path to regulatory approval in the European Union.” iRobot is also announcing that it’s laying off around 350 employees, or around 31 percent of its workforce as part of a restructuring . It expects to notify the majority of affected employees by the end of March. As part of the announcement, iRobot chair and CEO Colin Angle, who co-founded the company in 1990, is stepping down