Also understand that this is not permanent, every update you will need to make the change over again.
If this is what you want then go to
ow_plugins/mailbox/bol/conversation_service_php and go to line number 2791 you will see this code
$qs[] = 'sex';
and just change it to (notice its not '' but ' ' there is a space in there)
$qs[] = ' '; //was sex
and save your file, if your using cloudflare you will need to go into cloudflare and purge that file from the cache, then control f5 to refresh your page and then it will show only name.
You may not have to do all that however, im still looking to see what onView is about and see if there is a admin flag option set for that. So hold on a few min before you do anything.
That means that other users cannot see their gender from their profile OK... and also that you dont have to edit any code. ;)
UPDATE: appears to be the checkmark for the on profile edit option not the view option in questions that does this.
your welcome