How to disable notice message?!

[Jacson]

I've unpublished and unrequired email in Shopper field list.
BY this way: Configuration -> Shopper Fields -> select it and choose Unpublish and unrequired bottom.
So as a Shopper in website I don't need to enter any Email. Sounds good.
But in last step, shopper has a Notice. (I've attached screenshot)
Question:
How can I remove this notice?
Even I sat "Error Reporting" on None in joomla.
Even I used the template override(That's weird becasue it seems language override doesn't work on this string)
Joomla ver 3.8.1 -  PHP ver 5.6
Thank all of you.

[jenkinhill]

You must have a shopper email address so confirmation order emails can be sent, and is a required field for registration in Joomla.  Its not a system error so can't be turned off, it is telling you that you have a configuration problem.

[Jacson]

Mr. Jenkinhill thank you.
Ok. So, how can I change the message?! because I've tried with language override but doesn't change.
Question:
change the message of: "You must provide at least one recipient email address."
to "thank you for shopping"   

[jenkinhill]

Create an override for PHPMAILER_PROVIDE_ADDRESS   - http://forum.virtuemart.net/index.php?topic=113895.0

As the error would be a system stopper, I'm not sure that the order would be completed.