Remove Duplicate Post?

Can someone remind me how to delete a duplicate response ......... it's been a awhile.

You need to contact member services

Thanks but that sounds like too much trouble; it looks like some of you will have to live with my gaffe. 

If you started the same thread twice you can easily just hit delete unless someone replied to you then you have to contact member services.  If you mean you posted the same thing more than once in a thread, you just delete one of the posts.