Don't update applied promotions

Author: loevgaard

src/Doctrine/ORM/ChannelPricingRepositoryTrait.php

@@ -213,7 +213,6 @@ public function updatePrices(string $bulkIdentifier): void
                     ->createQueryBuilder('o')
                     ->update()
                     ->set('o.bulkIdentifier', ':null')
-                    ->set('o.appliedPromotions', ':null')
                     ->andWhere('o.id IN (:ids)')
                     ->setParameter('null', null)
                     ->setParameter('ids', $ids)