Email when new user signs up

Hello

I have installed register helper addon… When a new user signs up, there is an auto-email triggered with info about the new user but along with the extra fields are also added in the email… we need to remove only that from this email how can we do that?

As I have added those extra fields to show in profile only (edit profile) so always the extra fields are dumped in the email body with questions and all relevant empty data whenever a new member joins…

Is there any file that needs to be edited and comment out those lines to stop this?

Please help thanks in advance…

Note @andrewza: I had added this question on PRH support but it says This post has been held for moderation so seeking help here too…