Hello Luc,
When the blog post is posted as a team blog contribution, we actually display 2 avatars on the blog post so that it is easily distinguish-able that the blog post was for a specific team on the site
Currently there is no way to disable this on the blog post itself but you can modify the file /components/com_easyblog/themes/elegantblue/blog.avatar.php and locate the codes below,
<?php
if( isset( $row->team_id ) )
{
$teamBlog = EasyBlogHelper::getTable( 'TeamBlog', 'Table');
$teamBlog->load( $row->team_id );
?>
<a href="<?php echo EasyBlogRouter::_('index.php?option=com_easyblog&view=teamblog&layout=listings&id=' . $teamBlog->id ); ?>" class="avatar isTeamBlog float-l prel">
<img src="<?php echo $teamBlog->getAvatar(); ?>" alt="<?php echo $teamBlog->title; ?>" class="avatar" width="60" height="60" />
</a>
<a href="<?php echo $row->blogger->getProfileLink(); ?>" class="avatar isBlogger float-l pabs">
<img src="<?php echo $row->blogger->getAvatar(); ?>" alt="<?php echo $this->escape( $row->blogger->getName() ); ?>" class="avatar" style="width:30px !important; height:30px !important;" width="30" height="30" />
</a>
<?php
} else {
?>
<a href="<?php echo $row->blogger->getProfileLink(); ?>" class="avatar float-l">
<img src="<?php echo $row->blogger->getAvatar(); ?>" alt="<?php echo $this->escape( $row->blogger->getName() ); ?>" class="avatar isBlogger" style="width:60px !important; height:60px !important;" width="60" height="60" />
</a>
<?php } ?>
Replace the codes above with,
<a href="<?php echo $row->blogger->getProfileLink(); ?>" class="avatar float-l">
<img src="<?php echo $row->blogger->getAvatar(); ?>" alt="<?php echo $this->escape( $row->blogger->getName() ); ?>" class="avatar isBlogger" style="width:60px !important; height:60px !important;" width="60" height="60" />
</a>