function plt_hide_wp_media_pro_menus() {
//Hide the "Media → Media Tags" menu.
remove_submenu_page('upload.php', 'edit-tags.php?taxonomy=wpmp-media-tag&post_type=attachment');
//Hide the "Settings → WP Media Pro" menu.
remove_submenu_page('options-general.php', 'wp-media-pro');
}
add_action('admin_menu', 'plt_hide_wp_media_pro_menus', 11);