Prestashop 1.6.1.19 - 删除交付计算步骤1结帐

PrestaShop version 1.6.1.19

As of now, PrestaShop's first step of the checkout process for the customer is showing a calculated delivery.

This delivery calculation doesn't seem logical for us to in step 1, as step 4 is already giving the customer an opportunity to choose whether to pickup in-store or have delivery.

Therefore, we wish to only get the price of this product in the first step of the checkout.

I know it's required to make some changes to the PHP files or similar - but I don't know where to look for these steps in those files.