Fixed some code issues

HPPH.Reference/HPPHExtensions.cs

@@ -1,14 +0,0 @@
-namespace HPPH.Reference;
-
-internal static class HPPHExtensions
-{
-    public static byte GetByteValueFromPercentage(this float percentage)
-    {
-        if (float.IsNaN(percentage) || (percentage < 0)) return 0;
-
-        return (byte)(percentage >= 1.0f ? 255 : percentage * 256.0f);
-    }
-
-    public static float GetPercentageFromByteValue(this byte value)
-        => value == 255 ? 1.0f : (value / 256.0f);
-}