How to Edit Home Page for Custom WordPress Theme

Hello,

A friend of mine has a site that was developed by a designer that for reasons unknown stopped working on the site. He contacted me asking if I could help him remove the search feature from his home page. I was able to locate the search form but cannot find where it resides to edit or remove it. I cloned a copy of the site and have a live version at https://captainerik.com/bestbeach. He want to remove the search fields just below the FlexSlider. Instead of the search fields he wants it to say, Search our Vacation Rentals .

Thanks!
Erik