Cleanup Netstandard21 class declaration.

Author: dlemstra

src/Magick.NET/Netstandard21/Factories/MagickImageCollectionFactory.cs

@@ -19,7 +19,7 @@
 namespace ImageMagick
 {
     /// <content />
-    public sealed partial class MagickImageCollectionFactory : IMagickImageCollectionFactory<QuantumType>
+    public sealed partial class MagickImageCollectionFactory
     {
         /// <summary>
         /// Initializes a new instance that implements <see cref="IMagickImageCollection{TQuantumType}"/>.

src/Magick.NET/Netstandard21/Factories/MagickImageFactory.cs

@@ -19,7 +19,7 @@
 namespace ImageMagick
 {
     /// <content />
-    public sealed partial class MagickImageFactory : IMagickImageFactory<QuantumType>
+    public sealed partial class MagickImageFactory
     {
         /// <summary>
         /// Initializes a new instance that implements <see cref="IMagickImage{TQuantumType}"/>.

src/Magick.NET/Netstandard21/Factories/MagickImageInfoFactory.cs

@@ -11,7 +11,7 @@ namespace ImageMagick
     /// <summary>
     /// Class that can be used to create <see cref="IMagickImageInfo"/> instances.
     /// </summary>
-    public sealed partial class MagickImageInfoFactory : IMagickImageInfoFactory
+    public sealed partial class MagickImageInfoFactory
     {
         /// <summary>
         /// Initializes a new instance that implements <see cref="IMagickImageInfo"/>.

src/Magick.NET/Netstandard21/MagickFormatInfo.cs

@@ -9,7 +9,7 @@
 namespace ImageMagick
 {
     /// <content/>
-    public sealed partial class MagickFormatInfo : IMagickFormatInfo
+    public sealed partial class MagickFormatInfo
     {
         /// <summary>
         /// Returns the format information. The header of the image in the span of bytes is used to

src/Magick.NET/Netstandard21/MagickImage.cs

@@ -19,7 +19,7 @@
 namespace ImageMagick
 {
     /// <content/>
-    public sealed partial class MagickImage : IMagickImage<QuantumType>, INativeInstance
+    public sealed partial class MagickImage
     {
         /// <summary>
         /// Initializes a new instance of the <see cref="MagickImage"/> class.

src/Magick.NET/Netstandard21/MagickImageCollection.cs

@@ -18,7 +18,7 @@
 namespace ImageMagick
 {
     /// <content />
-    public sealed partial class MagickImageCollection : IMagickImageCollection<QuantumType>
+    public sealed partial class MagickImageCollection
     {
         /// <summary>
         /// Initializes a new instance of the <see cref="MagickImageCollection"/> class.

src/Magick.NET/Netstandard21/MagickImageInfo.cs

@@ -10,7 +10,7 @@
 namespace ImageMagick
 {
     /// <content />
-    public sealed partial class MagickImageInfo : IMagickImageInfo
+    public sealed partial class MagickImageInfo
     {
         /// <summary>
         /// Initializes a new instance of the <see cref="MagickImageInfo"/> class.

src/Magick.NET/Netstandard21/Pixels/PixelCollection.cs

@@ -4,8 +4,6 @@
 #if NETSTANDARD2_1
 
 using System;
-using System.Collections;
-using System.Collections.Generic;
 
 #if Q8
 using QuantumType = System.Byte;
@@ -19,7 +17,7 @@
 
 namespace ImageMagick
 {
-    internal abstract partial class PixelCollection : IPixelCollection<QuantumType>
+    internal abstract partial class PixelCollection
     {
         public virtual void SetArea(int x, int y, int width, int height, ReadOnlySpan<QuantumType> values)
             => SetAreaUnchecked(x, y, width, height, values);

src/Magick.NET/Netstandard21/Pixels/SafePixelCollection.cs

@@ -17,7 +17,7 @@
 
 namespace ImageMagick
 {
-    internal sealed partial class SafePixelCollection : PixelCollection
+    internal sealed partial class SafePixelCollection
     {
         public override void SetArea(int x, int y, int width, int height, ReadOnlySpan<QuantumType> values)
         {

src/Magick.NET/Netstandard21/Pixels/UnsafePixelCollection.cs

@@ -17,7 +17,7 @@
 
 namespace ImageMagick
 {
-    internal sealed partial class UnsafePixelCollection : PixelCollection, IUnsafePixelCollection<QuantumType>
+    internal sealed partial class UnsafePixelCollection
     {
         public override void SetArea(IMagickGeometry geometry, ReadOnlySpan<QuantumType> values)
         {