fix: remove invalid invoice type check from supplier order stats (#38979)

Author: nathanpixodeo

htdocs/product/stock/stats/commande_fournisseur.php

@@ -328,10 +328,6 @@
 					while ($i < min($num, $limit)) {
 						$objp = $db->fetch_object($result);
 
-						if ($objp->type == Facture::TYPE_CREDIT_NOTE) {
-							$objp->qty = -($objp->qty);
-						}
-
 						//                      $total_ht_pondere += $objp->total_ht_pondere;
 						$total_qty += $objp->qty;