I assumed you were a board admin since you posted your query on the boards admins message board.

A board poster/user can delete a post they made provided they are logged in using the same username they used when they posted the message they want to delete. If you are not seeing the option to edit or delete your own posts it is likely you are not using the same account you did when you posted the message.

If that is the case the board admin of the board can delete the post for you if you click the REPORT ABUSE link and request that your post be deleted...you don't need to give a reason for removal but do include the fact the post is your own post.

Joan