For this
Open the file > templates>jamona>index.php
around line 85 you will find this text
<div id="ja-logo">
<!-- LOGO -->
<?php
$siteName = $tmpTools->sitename();
if ($tmpTools->getParam('logoType')=='image') { ?>
<h1 class="logo">
<a href="index.php" title="<?php echo $siteName; ?>"><span><?php echo $siteName; ?></span></a>
</h1>
<?php } else {
$logoText = (trim($tmpTools->getParam('logoText'))=='') ? $config->sitename : $tmpTools->getParam('logoText');
$sloganText = (trim($tmpTools->getParam('sloganText'))=='') ? JText::_('SITE SLOGAN') : $tmpTools->getParam('sloganText'); ?>
<div class="logo-text">
<h1><a href="index.php" title="<?php echo $siteName; ?>"><span><?php echo $logoText; ?></span></a></h1>
<p class="site-slogan"><?php echo $sloganText;?></p>
</div>
<?php } ?>
<!-- //LOGO -->
</div>
You need to remove this and the logo or text wont be displayed.
