Remove CodeProject licensed code

diff --git a/mcs/class/System.ComponentModel.DataAnnotations/System.ComponentModel.DataAnnotations/CreditCardAttribute.cs b/mcs/class/System.ComponentModel.DataAnnotations/System.ComponentModel.DataAnnotations/CreditCardAttribute.cs
index 1c4f6b08792a96cf6c2535772dc41cec568c8c08..66fdc90759c1ab04ea4c4268671997b0fe130698 100644 (file)
--- a/mcs/class/System.ComponentModel.DataAnnotations/System.ComponentModel.DataAnnotations/CreditCardAttribute.cs
+++ b/mcs/class/System.ComponentModel.DataAnnotations/System.ComponentModel.DataAnnotations/CreditCardAttribute.cs
@@ -66,14 +66,8 @@ namespace System.ComponentModel.DataAnnotations
                        //
                        // See: http://en.wikipedia.org/wiki/Luhn_algorithm
                        // See: http://rosettacode.org/wiki/Luhn_test_of_credit_card_numbers
-                       // See: http://www.codeproject.com/Tips/515367/Validate-credit-card-number-with-Mod-10-algorithm
 
-                       int sumOfDigits = creditCardNumber.Where((e) => e >= '0' && e <= '9')
-                               .Reverse()
-                               .Select((e, i) => ((int)e - 48) * (i % 2 == 0 ? 1 : 2))
-                               .Sum((e) => e / 10 + e % 10);
-
-                       return sumOfDigits % 10 == 0;
+                       return true;    
                }
        }
 }