Removing search form from Audioman Pro

Hi there, I have created a site using Audioman Pro and I would like to remove the search icon/form from the top right of the header menu. I have tried a number of different CSS that appeared to work for others on different themes but sadly, no luck. I know it would help to know the URL of the website but for privacy reasons I'd rather not give it out. It is also not listed as a widget. In the editor section there appears to be a 'Search Form, Searchform.php' and a Search result, search.php' I'm quite new at all the CSS technical side so if you wouldn't mind making it easy to follow that would be amazing. I am going grey trying to figure this out so I hope you can help.