go to this File: templatespurity_iiitplsblocksheader.php
Comment this code or remove this . doing this removes the logo and its text
<!-- LOGO -->
<div class="logo logo-<?php echo $logotype ?>">
<a href="<?php echo JURI::base(true) ?>" title="<?php echo strip_tags($sitename) ?>">
<?php if($logotype == 'image'): ?>
<img class="logo-img" src="<?php echo JURI::base(true) . '/' . $logoimage ?>" alt="<?php echo strip_tags($sitename) ?>" />
<?php endif ?>
<span><?php echo $sitename ?></span>
</a>
</div>
<!-- //LOGO -->
