Delete the navigation menü

Hey 8again) guys,

I have another question: How could i delete the upper section of my website (the navigation menü)

https://secondsuspense.com/wordpress/

My plan is, to navigate the page over the featured page pictures and link the slider images to the home page (which is shown in the link).

If i select no menü, the header section is stil there.

Any suggestions?
Thx guys