in kaynite II to completely remove the breadcrumbs open this file
templatesja_kyanite_iilayoutsblocksmain.php
around line 6
and remove this code.. the bread crumbs position would be completely removed
<!-- BREADCRUMS -->
<div id="ja-breadcrums">
<div class="inner clearfix">
<strong><?php echo JText::_('You are here')?></strong> <jdoc:include type="module" name="breadcrumbs" />
</div>
</div>
<!-- //BREADCRUMS -->
if you want the design behind the breadcrumbs to remain (the light black transparent background) the just remove this line
<strong><?php echo JText::_('You are here')?></strong> <jdoc:include type="module" name="breadcrumbs" />