Delete search bar below the header

Hey, I want to delete the grey search bar below the header image since there is a second search bar in the main menu bar (which I prefer). It looks weird since my main menu is directly below the header. Anyway, I can't find the code for it. How can I remove it (or at least get it to the bottom of the website)? (Sorry for language mistakes, I'm from Germany - let me know if you don't know what I mean!) And thank you for the theme - I'm still at the beginning, but I love it!