remove unnecessary enum

src/ImageSharp/MetaData/Profiles/ICC/Enums/IccProfileConversionMethod.cs

@@ -1,24 +0,0 @@
-// <copyright file="IccProfileConversionMethod.cs" company="James Jackson-South">
-// Copyright (c) James Jackson-South and contributors.
-// Licensed under the Apache License, Version 2.0.
-// </copyright>
-
-namespace ImageSharp
-{
-    /// <summary>
-    /// Profile Conversion Method
-    /// </summary>
-    internal enum IccProfileConversionMethod
-    {
-        Invalid,
-        D0,
-        D1,
-        D2,
-        D3,
-        A0,
-        A1,
-        A2,
-        ColorTrc,
-        GrayTrc,
-    }
-}