function plt_hide_sliderberg_menus() {
//Hide the "SliderBerg" menu.
remove_menu_page('sliderberg-welcome');
//Hide the "SliderBerg → Welcome" menu.
remove_submenu_page('sliderberg-welcome', 'sliderberg-welcome');
//Hide the "SliderBerg → Support Forum" menu.
remove_submenu_page('sliderberg-welcome', 'sliderberg-welcome-wp-support-forum');
}
add_action('admin_menu', 'plt_hide_sliderberg_menus', 1000000000);