You are using a much older version of EasyBlog which we no longer support but we will assist you just this once. You can edit the file /components/com_easyblog/themes/default/author.info.php and remove the codes below at line 47 - 49
[gist]
<?php if( $blogger->getWebsite() != '' ){ ?>
<div class="author-url small mts"><a href="<?php echo $this->escape( $blogger->getWebsite() ); ?>" target="_blank" class="author-url" rel="nofollow"><?php echo $this->escape( $blogger->getWebsite() ); ?></a></div>
<?php } ?>
[/gist]