function plt_hide_table_builder_block_menus() {
//Hide the "Table Builder" menu.
remove_menu_page('tablebuilder');
//Hide the "Table Builder → Welcome" menu.
remove_submenu_page('tablebuilder', 'http://127.0.0.1/wp-admin/admin.php?page=tablebuilder#welcome');
}
add_action('admin_menu', 'plt_hide_table_builder_block_menus', 11);