ARLINGTON, Va. – Amazon’s plan to enter the Twin Cities grocery store market with its Fresh brand appears dead. The news site Axios reported that leases for six stores have been cancelled. Amazon declined to comment on the Axios report, which was based on real estate sources. However, the Axios chief executive, Andy Jassy, told shareholders in February that the company would halt expansion of its Fresh stores as it experiments in the few dozen stores it has already opened. The company, Jassy said, needed to “find a format that we think resonates with customers.” The initial foray into the competitive Minnesota grocery market had stores in Arden Hills, Burnsville, Coon Rapid, Eagan, Eden Prairie and Lakeville.