PDF invoice - removing column

[azmaer]

Hello,

I've got strange issue with 100% width of product list in invoice.

In prestashop 1.7 in /pdf/invoice.product-tab.tpl

We have:

{if isset($layout.before_discount)}
<th class="product header small" width="{$layout.unit_price_tax_excl.width}%">{l s='Base price' d='Shop.Pdf' pdf='true'} <br /> {l s='(Tax excl.)' d='Shop.Pdf' pdf='true'}</th>
{/if}

and:

			{if isset($layout.before_discount)}
				<td class="product center">
					{if isset($order_detail.unit_price_tax_excl_before_specific_price)}
						{displayPrice currency=$order->id_currency price=$order_detail.unit_price_tax_excl_before_specific_price}
					{else}
						--
					{/if}
				</td>
			{/if}

i've wanted to remove this column so i remove this code but after generting invoice pdf, table is not 100% width. Any ideas why?

This column is added when someone order promotion products.