Remove unused class

src/Services/Marketing/Marketing.API/Model/Location.cs

@@ -1,9 +0,0 @@
-using System;
-using System.Collections.Generic;
-namespace Microsoft.eShopOnContainers.Services.Marketing.API.Model
-{
-    public class Location
-    {
-        public int Id { get; set; }
-    }
-}