CListFieldList::DeleteField

public function DeleteField($field_id)
{
	if($field_id != "NAME" && isset($this->fields[$field_id]))
	{
		/** @var CListField $obField */
		$obField = $this->fields[$field_id];
		$obField->Delete();
		unset($this->fields[$field_id]);

		$this->_save_form_settings($this->form_id);
	}
	return true;
}