Remove unnessary DebugGaurds on structs

src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.Rgb.cs

@@ -110,8 +110,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Rgb"/></returns>
         public Rgb ToRgb(Hsl color)
         {
-            Guard.NotNull(color, nameof(color));
-
             // Conversion
             return HslAndRgbConverter.Convert(color);
         }

src/ImageSharp/ColorSpaces/Conversion/Implementation/CieLuv/CieXyzToCieLuvConverter.cs

@@ -44,8 +44,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.CieLuvColor
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public CieLuv Convert(CieXyz input)
         {
-            DebugGuard.NotNull(input, nameof(input));
-
             // Conversion algorithm described here: http://www.brucelindbloom.com/index.html?Eqn_XYZ_to_Luv.html
             float yr = input.Y / this.LuvWhitePoint.Y;
             float up = ComputeUp(input);

src/ImageSharp/ColorSpaces/Conversion/Implementation/CieXyy/CieXyzAndCieXyyConverter.cs

@@ -16,8 +16,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.CieXyyColor
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public CieXyy Convert(CieXyz input)
         {
-            DebugGuard.NotNull(input, nameof(input));
-
             float x = input.X / (input.X + input.Y + input.Z);
             float y = input.Y / (input.X + input.Y + input.Z);
 
@@ -33,8 +31,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.CieXyyColor
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public CieXyz Convert(CieXyy input)
         {
-            DebugGuard.NotNull(input, nameof(input));
-
             if (MathF.Abs(input.Y) < Constants.Epsilon)
             {
                 return new CieXyz(0, 0, input.Yl);

src/ImageSharp/ColorSpaces/Conversion/Implementation/Hsl/HslAndRgbConverter.cs

@@ -16,8 +16,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.HslColorSap
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public Rgb Convert(Hsl input)
         {
-            DebugGuard.NotNull(input, nameof(input));
-
             float rangedH = input.H / 360F;
             float r = 0;
             float g = 0;
@@ -49,8 +47,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.HslColorSap
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public Hsl Convert(Rgb input)
         {
-            DebugGuard.NotNull(input, nameof(input));
-
             float r = input.R;
             float g = input.G;
             float b = input.B;

src/ImageSharp/ColorSpaces/Conversion/Implementation/Hsv/HsvAndRgbConverter.cs

@@ -16,8 +16,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.HsvColorSap
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public Rgb Convert(Hsv input)
         {
-            DebugGuard.NotNull(input, nameof(input));
-
             float s = input.S;
             float v = input.V;
 
@@ -81,8 +79,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.HsvColorSap
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public Hsv Convert(Rgb input)
         {
-            DebugGuard.NotNull(input, nameof(input));
-
             float r = input.R;
             float g = input.G;
             float b = input.B;

src/ImageSharp/ColorSpaces/Conversion/Implementation/HunterLab/CieXyzAndHunterLabConverterBase.cs

@@ -34,8 +34,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.HunterLabCo
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public static float ComputeKb(CieXyz whitePoint)
         {
-            DebugGuard.NotNull(whitePoint, nameof(whitePoint));
-
             if (whitePoint == Illuminants.C)
             {
                 return 70F;

src/ImageSharp/ColorSpaces/Conversion/Implementation/HunterLab/CieXyzToHunterLabConverter.cs

@@ -33,18 +33,12 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.HunterLabCo
         /// <summary>
         /// Gets the target reference white. When not set, <see cref="HunterLab.DefaultWhitePoint"/> is used.
         /// </summary>
-        public CieXyz HunterLabWhitePoint
-        {
-            [MethodImpl(MethodImplOptions.AggressiveInlining)]
-            get;
-        }
+        public CieXyz HunterLabWhitePoint { get; }
 
         /// <inheritdoc/>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public HunterLab Convert(CieXyz input)
         {
-            DebugGuard.NotNull(input, nameof(input));
-
             // Conversion algorithm described here: http://en.wikipedia.org/wiki/Lab_color_space#Hunter_Lab
             float x = input.X, y = input.Y, z = input.Z;
             float xn = this.HunterLabWhitePoint.X, yn = this.HunterLabWhitePoint.Y, zn = this.HunterLabWhitePoint.Z;

src/ImageSharp/ColorSpaces/Conversion/Implementation/Rgb/CieXyzToLinearRgbConverter.cs

@@ -38,8 +38,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.RgbColorSap
         /// <inheritdoc/>
         public LinearRgb Convert(CieXyz input)
         {
-            DebugGuard.NotNull(input, nameof(input));
-
             Matrix4x4.Invert(this.conversionMatrix, out Matrix4x4 inverted);
             Vector3 vector = Vector3.Transform(input.Vector, inverted);
             return new LinearRgb(vector, this.TargetWorkingSpace);

src/ImageSharp/ColorSpaces/Conversion/Implementation/Rgb/LinearRgbToCieXyzConverter.cs

@@ -38,7 +38,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.RgbColorSap
         /// <inheritdoc/>
         public CieXyz Convert(LinearRgb input)
         {
-            DebugGuard.NotNull(input, nameof(input));
             DebugGuard.IsTrue(input.WorkingSpace.Equals(this.SourceWorkingSpace), nameof(input.WorkingSpace), "Input and source working spaces must be equal.");
 
             Vector3 vector = Vector3.Transform(input.Vector, this.conversionMatrix);

src/ImageSharp/ColorSpaces/Conversion/Implementation/Rgb/LinearRgbToRgbConverter.cs

@@ -13,8 +13,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.RgbColorSap
         /// <inheritdoc/>
         public Rgb Convert(LinearRgb input)
         {
-            DebugGuard.NotNull(input, nameof(input));
-
             Vector3 vector = input.Vector;
             vector.X = input.WorkingSpace.Companding.Compress(vector.X);
             vector.Y = input.WorkingSpace.Companding.Compress(vector.Y);

src/ImageSharp/ColorSpaces/Conversion/Implementation/YCbCr/YCbCrAndRgbConverter.cs

@@ -19,8 +19,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.YCbCrColorS
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public Rgb Convert(YCbCr input)
         {
-            DebugGuard.NotNull(input, nameof(input));
-
             float y = input.Y;
             float cb = input.Cb - 128F;
             float cr = input.Cr - 128F;
@@ -36,8 +34,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.YCbCrColorS
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public YCbCr Convert(Rgb input)
         {
-            DebugGuard.NotNull(input, nameof(input));
-
             Vector3 rgb = input.Vector * MaxBytes;
             float r = rgb.X;
             float g = rgb.Y;