chore: minor refactoring

Author: swagfin

ObjectSemantics.NET.Tests/MoqModels/CustomerPayment.cs

@@ -9,7 +9,6 @@ public class CustomerPayment
         public double Amount { get; set; }
         public string ReferenceNo { get; set; }
         public string PaidBy { get; set; }
-        public string PaidByMobile { get; set; }
         public string RegisteredBy { get; set; }
         public string Narration { get; set; }
         public string CustomerName { get; set; }
@@ -18,6 +17,7 @@ public class CustomerPayment
         public DateTime PaymentDate { get; set; }
         public Customer Customer { get; set; }
     }
+
     public class Customer
     {
         public int Id { get; set; }

ObjectSemantics.NET.Tests/TemplateFileMappingTests.cs

@@ -24,7 +24,6 @@ public void Should_Map_Large_File_Template()
                 LedgerAccountId = 1,
                 ReferenceNo = "CP-20251029-14QH",
                 PaidBy = "JOHN DOE",
-                PaidByMobile = "N/A",
                 PaymentDate = DateTime.Parse("2025-10-29T14:03:19.4147588"),
                 RegisteredBy = "George Waynne",
                 Customer = new Customer