Like this using Ed's code.

WITH FinalDBUser(dbname, username) AS (

Select

dbname,

username

from

dbo.FinalDBleverluser

Order by

dbname

)

SELECT @strSQL = @strSQL + 'use ' + QUOTENAME(dbname) + '; drop user ' + QUOTENAME(username) + '; '

FROM FinalDBUser;

SELECT @strSQL;