function plt_hide_move_admin_menu_items_menus() {
//Hide the "Admin Menu" menu.
remove_menu_page('stb_mami');
//Hide the "Admin Menu → Admin Menu" menu.
remove_submenu_page('stb_mami', 'stb_mami');
//Hide the "Admin Menu → Settings" menu.
remove_submenu_page('stb_mami', 'stb_mami_settings');
}
add_action('admin_menu', 'plt_hide_move_admin_menu_items_menus', 1000);