Ive noticed that like myself there those who have wondered how to do this. This is to remove the second photo that displays on searches etc.The actual profile however remain unaffected. I use this on my site for business to have thier own profile and seperate search critieria along with the photo gallery for products etc. Thank you so much to everyone thats gave me insights on where to look to solve this one. Go to /inc/design.inc.php, find "function get_member_thumbnail" Below you will see
//$oPhoto = new ProfilePhotos( $aCoupleInfo['ID'] );
$aCoupleFile = $oPhoto -> getPrimaryPhotoArray($aCoupleInfo['PrimPhoto']);
//--------------------------
Remove it and your done