How can I edit links inside Head element?

I want to remove unused css files (fontawesome css) from head but couldn’t figure out how to do this? Is it possible to manage the linked files in Head section without editing the html manually?

If you have fontawesome.css in the head, it means that somewhere in your design you have a fontawesome icon, change all fontawesome icons to a different type of icon. Then you won’t have the link in the head