Removing wp-json link tag and what’s it gonna cost?

I have a simple question.

I want to keep my code as simple as possible so I removed all the unwanted head tags including REST API related tags (<link rel="https://api.w.org/" href="http://brahbrahbrah.site/wp-json/"> as such) from head, but I still want to use REST API functionality.

It seems to be working after removing link tags. So, do I need those link tags in order to use WP’s REST API properly?