Search multiple content types

[the one]

I know this is a simple fix but as you all i know by now i dont do simple lol

If you go here http://jandeane81.com/search.php.

If you go to that link thats how i like it but if you then click on Search Single Content Type in then brings up next to that Search multiple content types.Then if you click Search multiple content types it takes you back to Search Single Content Type

I do not want that Search multiple content types.How do i delete that forever and just have Search Single Content Type

Many thanks once again

Malc