Simplify partial class definition.

src/Magick.NET/Native/Colors/MagickColor.cs

@@ -33,7 +33,7 @@ private static NativeMagickColor CreateNativeInstance(IMagickColor<QuantumType>
     }
 
     [NativeInterop(QuantumType = true, ManagedToNative = true, NativeToManaged = true)]
-    private unsafe sealed partial class NativeMagickColor : NativeInstance
+    private sealed partial class NativeMagickColor : NativeInstance
     {
         public NativeMagickColor()
             => Instance = Create();

src/Magick.NET/Native/Colors/MagickColorCollection.cs

@@ -9,7 +9,7 @@ namespace ImageMagick;
 internal static partial class MagickColorCollection
 {
     [NativeInterop]
-    private unsafe partial class NativeMagickColorCollection
+    private partial class NativeMagickColorCollection
     {
         public static partial void DisposeList(IntPtr list);
 

src/Magick.NET/Native/Drawables/DrawingWand.cs

@@ -20,7 +20,7 @@ namespace ImageMagick;
 internal partial class DrawingWand : IDisposable
 {
     [NativeInterop]
-    private unsafe sealed partial class NativeDrawingWand : NativeInstance
+    private partial class NativeDrawingWand : NativeInstance
     {
         public NativeDrawingWand(IMagickImage image, DrawingSettings settings)
             => Instance = Create(image, settings);

src/Magick.NET/Native/Exceptions/MagickExceptionHelper.cs

@@ -10,7 +10,7 @@ namespace ImageMagick;
 internal static partial class MagickExceptionHelper
 {
     [NativeInterop]
-    private static unsafe partial class NativeMagickExceptionHelper
+    private partial class NativeMagickExceptionHelper
     {
         public static partial string? Description(IntPtr exception);
 

src/Magick.NET/Native/MagickFormatInfo.cs

@@ -10,7 +10,7 @@ namespace ImageMagick;
 public partial class MagickFormatInfo
 {
     [NativeInterop]
-    private unsafe sealed partial class NativeMagickFormatInfo : ConstNativeInstance
+    private sealed partial class NativeMagickFormatInfo : ConstNativeInstance
     {
         protected override string TypeName
             => nameof(MagickFormatInfo);

src/Magick.NET/Native/Quantum.cs

@@ -19,7 +19,7 @@ namespace ImageMagick;
 public partial class Quantum
 {
     [NativeInterop]
-    private sealed partial class NativeQuantum
+    private partial class NativeQuantum
     {
         public static partial int Depth_Get();
 

src/Magick.NET/Native/ResourceLimits.cs

@@ -9,7 +9,7 @@ namespace ImageMagick;
 public partial class ResourceLimits
 {
     [NativeInterop]
-    private sealed partial class NativeResourceLimits
+    private partial class NativeResourceLimits
     {
         public static partial ulong Area_Get();