Hide blogroll header

I would like to hide the blog roll header that reads
<h2>blogroll</h2> before my blogroll list

I went here https://codex.www.ads-software.com/Template_Tags/wp_list_bookmarks

I’m using the <?phpwp_list_bookmarks();?> code, but where do i or how do i customise it to get the header off?

it said title_li should do it but what should i do to get it to work, it seems everything i’ve tried is just changing the size of the header or either getting an error sign.