If you wan't for display, you can convert to string using convert.

To remove seconds from the datetime, you can do something different.

Either you specify the exact time to start or you can calculate it.

SELECT DATEADD( MINUTE, DATEDIFF( MINUTE, 0, DATEADD( YEAR, -2, GETDATE())), 0)

By the way, you can remove a CTE, I just added to show the ranges without showing all the lines.