Delete duplicate records with CTE

WITH CTE_FriendRecruiters (RNo,FK_User,FK_Promotion,AuthId,AuthMode)
As
(
    SELECT ROW_NUMBER() over (partition by AuthId order by AuthId) As RNo ,
    FK_User,FK_Promotion,AuthId,AuthMode FROM dbo.FriendRecruiters
)

DELETE FROM CTE_FriendRecruiters where RNo <> 1