function plt_hide_yoppli_video_player_menus() {
//Hide the "Video Player" menu.
remove_menu_page('yoppli-video-player');
//Hide the "Video Player → General Settings" menu.
remove_submenu_page('yoppli-video-player', 'yoppli-video-player');
//Hide the "Video Player → Instructions" menu.
remove_submenu_page('yoppli-video-player', 'yvpd-instructions');
}
add_action('admin_menu', 'plt_hide_yoppli_video_player_menus', 11);