remove un used property function

Author: Gurpreet Singh

src/TestStack.BDDfy/Configuration/IHumanizer.cs

@@ -4,7 +4,6 @@ namespace TestStack.BDDfy.Configuration
 {
     public interface IHumanizer
     {
-        Func<string, bool> PreserveCasingWhen { get; set; }
         string Humanize(string input);
     }
 }

src/TestStack.BDDfy/DefaultHumanizer.cs

@@ -12,12 +12,10 @@ internal partial class DefaultHumanizer: IHumanizer
     {
         private static readonly TextInfo textInfo = CultureInfo.CurrentCulture.TextInfo;
 
-        public Func<string, bool> PreserveCasingWhen { get; set; } = input
-            => input.Replace("__", "-").Contains('_');
-
         public string Humanize(string input)
         {
-            var shouldPreserveCasing = PreserveCasingWhen(input);
+            var shouldPreserveCasing = input.Replace("__", "-").Contains('_');
+
             input = TokensPattern().Replace(input, "-#$1#-");
 
             var words = input.Split(['_','-']);