Removed unwanted vs folder and key defined in the property grid product key row.

Author: Manivannan-E

Samples/Built-in-Mask/.vs/Built-in-Mask/v16/.suo

@@ -36,7 +36,7 @@ public BuiltInMaskViewModel()
             BuiltInMask.NumberMaskProperty = "-8728";
             BuiltInMask.OctalMaskProperty = "/012";
             BuiltInMask.PositiveNumberMaskProperty = "3721972";
-            BuiltInMask.ProductKeyMaskProperty = "HTY23OPY678GR56R01G564GH";
+            BuiltInMask.ProductKeyMaskProperty = " ";
         }
     }
 }