In 1.7.6 file to edit is /themes/yourtheme/templates/catalog/product.tpl
I commented out the whole section below lines 114 - 135 because I don't want the manufacturers logo either. Added a <br> under it so things don't look too tight on product page.
{*{block name='product_reference'} {if isset($product_manufacturer->id)} <div class="product-manufacturer"> {if isset($manufacturer_image_url)} <a href="{$product_brand_url}"> <img src="{$manufacturer_image_url}" class="img img-thumbnail manufacturer-logo" /> </a> {else} <label class="label">{l s='Brand' d='Shop.Theme.Catalog'}</label> <span> <a href="{$product_brand_url}">{$product_manufacturer->name}</a> </span> {/if} </div> {/if} {if isset($product.reference_to_display)} <div class="product-reference"> <label class="label">{l s='Reference' d='Shop.Theme.Catalog'} </label> <span itemprop="sku">{$product.reference_to_display}</span> </div> {/if} {/block}*} <br>
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