How to Hide the "EziGDPR" Admin Menu

function plt_hide_ezigdpr_eu_blocker_menus() {
	//Hide the "EziGDPR" menu.
	remove_menu_page('ezigdpr-eu-blocker/ezigdpr-eu-blocker.php');
}

add_action('admin_menu', 'plt_hide_ezigdpr_eu_blocker_menus', 11);

Where do I put this code?