Maintenance::_delete PHP Method

    private function _delete()
    {
        $this->user->restrict('Admin.Maintenance.Delete');
        if ($this->input->get('delete')) {
            if ($result = $this->Maintenance_model->deleteBackupFile($this->input->get('delete'))) {
                $this->alert->set('success', sprintf($this->lang->line('alert_success'), 'Database backup deleted '));
            }
            return TRUE;
        }
    }