How disable the default welcome message?

Hello to all members,

Please anybody can help me to disable the welcome message:
$_['text_subject']
$_['text_welcome']
$_['text_login']
$_['text_services']

that sending to customer after complete registration because i use custom module (email verification) but know come to the email two message (default welcome message & email verification message).
So, i want to disable the default welcome message in open cart i want only email verification message.

My version in open cart is 2.3.0.2

Best Regards

Well then contact the developer of that extension and call for a fully working extension.
Because if that extension is using an extra email notification, it should also disable the standard - to prevent sending 2