Please Help, how to remove search bar from….

Hello I downloaded the modern notepad theme heres the link to it

https://www.ads-software.com/extend/themes/modern-notepad

I’m currently working on changing the colors of everything but I’ve run into a problem. I want to completely remove the search bar at the top of the page, I’ve tried a few things but can’t figure it out. Anyone please help. All coments are appreciated, thank you