fix bug: 跑腿计费有漏改点

mallApp/src/pages/order/components/app-delivery.vue

@@ -322,9 +322,6 @@ export default {
      * @returns {Number} 跑腿费
      */
     calculateDeliveryCostByDistance(distanceInKm){
-      // 如果不收配送费，返回0
-      if(!this.isFreight) return 0;
-      
       const freeKm = Number(this.hsFreeKm) || 0;
       const addFee = Number(this.hsAddFee) || 0;