buddypress remove username from autocomplete

Try this but note that it may not send the message:

'<span id="%s" href="#"></span><img src="%s" style="width: 15px">   %s %s' . "\n",  
            esc_attr( 'link-' . $user->ID ),  
            esc_url( $user->image ),  
            esc_html( $user->name ),  
            ' '

Or this:

'<span id="%s" href="#"></span><img src="%s" style="width: 15px">   %s' . "\n",  
            esc_attr( 'link-' . $user->ID ),  
            esc_url( $user->image ),  
            esc_html( $user->name )