What should I do to turn off automatica mail "order confirmation"?

[Vitalij Kazakevic]

Help please to solve problem.

After placing an order system automaticaly send order confirmation email to customer.

Maybe somebody know how to disable it?

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Prestashop 1.6.1

[eleazar]

Search for this code in /classes/PaymentModule.php (line 777 - 790)

if (Validate::isEmail($this->context->customer->email)) {
	Mail::Send(
	(int)$order->id_lang,
	'order_conf',
	Mail::l('Order confirmation', (int)$order->id_lang),
	$data,
	$this->context->customer->email,
	$this->context->customer->firstname.' '.$this->context->customer->lastname,
	null,
	null,
	$file_attachement,
	null, _PS_MAIL_DIR_, false, (int)$order->id_shop
	);
	}

and deactivate it.