Hello Armando,

This is hardcoded in EasyBlog currently but in the next release, we'll make this configurable. You can temporarily remove this by removing the codes below in /components/com_easyblog/themes/wireframe/structure/default.php

[gist]
<?php if ($miniheader) { ?>
<div id="es" class="es">
<?php echo $miniheader; ?>
</div>
<?php } ?>
[/gist]

I removed the code and miniheader took off from the blog posts but remained under a normal article of joomla (not EasyBlog)

This can be configured from the plugin Content - EasySocial. You can turn it off from the plugin settings.