Have had a bit of a play.
Answer turns out to be very easy !
In line 799 just change
'type' => 'both'
to
'type' => 'avatar'
Then just the avatar displays.
By the by change it to
'type' => 'name' and guess what, just the name displays!
As said earlier make a note of what you have changed, as later upgrades will change this back.