Remove warning on usings in Marketing.API

Author: Unai Zorrilla Castro

src/Services/Marketing/Marketing.API/IntegrationEvents/Events/UserLocationUpdatedIntegrationEvent.cs

@@ -7,6 +7,7 @@
     public class UserLocationUpdatedIntegrationEvent : IntegrationEvent
     {
         public string UserId { get; set; }
+
         public List<UserLocationDetails> LocationList { get; set; }
 
         public UserLocationUpdatedIntegrationEvent(string userId, List<UserLocationDetails> locationList)

src/Services/Marketing/Marketing.API/IntegrationEvents/Handlers/UserLocationUpdatedIntegrationEventHandler.cs

@@ -4,7 +4,6 @@
     using Marketing.API.Model;
     using Microsoft.eShopOnContainers.BuildingBlocks.EventBus.Abstractions;
     using Microsoft.eShopOnContainers.Services.Marketing.API.Infrastructure.Repositories;
-    using Microsoft.eShopOnContainers.Services.Marketing.API.Model;
     using System;
     using System.Collections.Generic;
     using System.Threading.Tasks;