How to Hide the "Set Logo Link" Admin Menu

function plt_hide_easy_logo_link_change_menus() {
	//Hide the "Settings → Set Logo Link" menu.
	remove_submenu_page('options-general.php', 'easylogolinkchange');
}

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

Where do I put this code?