How to Hide 2J SlideShow Admin Menus

function plt_hide_2j_slideshow_menus() {
	//Hide "2J Slideshow".
	remove_menu_page('edit.php?post_type=twoj_slideshow_post');
	//Hide "2J Slideshow → SlideShows".
	remove_submenu_page('edit.php?post_type=twoj_slideshow_post', 'edit.php?post_type=twoj_slideshow_post');
	//Hide "2J Slideshow → Add Slideshow".
	remove_submenu_page('edit.php?post_type=twoj_slideshow_post', 'post-new.php?post_type=twoj_slideshow_post');
	//Hide "2J Slideshow → Help".
	remove_submenu_page('edit.php?post_type=twoj_slideshow_post', 'twoj-slideshow-support');
	//Hide "2J Slideshow → 2J Slideshow Demo".
	remove_submenu_page('edit.php?post_type=twoj_slideshow_post', 'twoj-slideshow-demo');
	//Hide "2J Slideshow → Report".
	remove_submenu_page('edit.php?post_type=twoj_slideshow_post', 'twoj-slideshow-report');
}

add_action('admin_menu', 'plt_hide_2j_slideshow_menus', 11);

Where do I put this code?