How to Hide wpForo Admin Menus

function plt_hide_wpforo_menus() {
	//Hide "wpForo".
	remove_menu_page('wpforo-overview');
	//Hide "wpForo → Overview".
	remove_submenu_page('wpforo-overview', 'wpforo-overview');
	//Hide "wpForo → Forums".
	remove_submenu_page('wpforo-overview', 'wpforo-forums');
	//Hide "wpForo → Settings".
	remove_submenu_page('wpforo-overview', 'wpforo-settings');
	//Hide "wpForo → Moderation".
	remove_submenu_page('wpforo-overview', 'wpforo-moderations');
	//Hide "wpForo → Phrases".
	remove_submenu_page('wpforo-overview', 'wpforo-phrases');
	//Hide "wpForo → Tools".
	remove_submenu_page('wpforo-overview', 'wpforo-tools');
	//Hide "wpForo → Boards".
	remove_submenu_page('wpforo-overview', 'wpforo-boards');
	//Hide "wpForo → Accesses".
	remove_submenu_page('wpforo-overview', 'wpforo-accesses');
	//Hide "wpForo → Usergroups".
	remove_submenu_page('wpforo-overview', 'wpforo-usergroups');
	//Hide "wpForo → Members".
	remove_submenu_page('wpforo-overview', 'wpforo-members');
	//Hide "wpForo → Themes".
	remove_submenu_page('wpforo-overview', 'wpforo-themes');
	//Hide "wpForo → Addons".
	remove_submenu_page('wpforo-overview', 'wpforo-addons');
}

add_action('admin_menu', 'plt_hide_wpforo_menus', 40);

Where do I put this code?