How to delete "Details" of Products Descriptinon & "Products tags" of Products tab?

Please remove these codes in view.phtml of app\design\frontend\default\jm_tyrolitetemplate\c atalog\product

Code:

<?php if ($_description = $this->getChildHtml('description')):?>
    		<li><a href="#ja-tab-decription"><?php echo $this->__('Product Description') ?></a></li>
    	<?php endif; ?>

Code:

<?php if($product_additional_data = $this->getChildHtml('product_additional_data')): ?>
       	<li><a href="#ja-tabitem-tags"><?php echo $this->__('Product Tags') ?></a></li>
      <?php endif; ?>

Code:

<?php if ( $_description ):?>
	    	<div id="ja-tab-decription">
	            <div class="collateral-box">
	                <?php echo $_description ?>
	            </div>
				</div>
				<?php endif;?>

Code:

<?php if( $product_additional_data ): ?>
				<div id="ja-tabitem-tags">
					<?php echo $product_additional_data; ?>
				</div>
				<?php endif;?>

Are you sure for this, please? I can’t find the codes on view.phtml! Please check that, thanks!

Is there anybody could check that for us, please?