Yep you are right. A small edit to a php file is needed.
Simply open templates>ja_ores>layouts>blocks>navhelper.php and either remove or comment out the code I have highlighted in red below.
<div class="ja-navhelper wrap">
<div class="main clearfix">
<div class="inner clearfix">
<div class="ja-breadcrums">
<!--JA Template Guide only-->
<strong><?php echo JText::_('You are here')?></strong><jdoc:include type="modules" name="breadcrumb" />
<!--<strong><?php echo JText::_('You are here')?></strong> <jdoc:include type="module" name="breadcrumbs" />-->
</div>
<ul class="ja-links">
<li class="layout-switcher"><?php $this->loadBlock('usertools/layout-switcher') ?> </li>
<li class="top"><a href="<?php echo $this->getCurrentURL();?>#Top" title="Back to Top" onclick="javascript:scroll(0,0)"><?php echo JText::_('BACK TO TOP')?></a></li>
</ul>
<ul class="no-display">
<li><a href="<?php echo $this->getCurrentURL();?>#ja-content" title="<?php echo JText::_("Skip to content");?>"><?php echo JText::_("Skip to content");?></a></li>
</ul>
</div>
</div>
</div>