sestell1 (5/7/2014)
Hmph. Since the question asked how to remove the filegroup from the database, I didn't consider dropping the database a viable option."Memory-optimized filegroups cannot be deleted."
http://msdn.microsoft.com/en-us/library/dn284308(v=sql.120).aspx
+1
It's like asking how to remove a SQL Server instance from your server and you say that you can do it by reinstalling the OS. It works, but it's not exactly what you need.