[src] Remove the NO_SYSTEM_DRAWING conditional compilation define, it's never set.

src/AppKit/NSOpenGLContext.cs

@@ -1,7 +1,5 @@
 #if !__MACCATALYST__
-#if !NO_SYSTEM_DRAWING
 using System.Drawing;
-#endif
 
 #nullable enable
 
@@ -24,7 +22,6 @@ unsafe void SetValue (int /* GLint */ val, NSOpenGLContextParameter par)
 			return ret;
 		}
 
-#if !NO_SYSTEM_DRAWING
 		/// <summary>To be added.</summary>
 		///         <value>To be added.</value>
 		///         <remarks>To be added.</remarks>
@@ -38,7 +35,6 @@ unsafe public Rectangle SwapRectangle {
 				SetValues ((IntPtr) (&value), NSOpenGLContextParameter.SwapRectangle);
 			}
 		}
-#endif
 
 		/// <summary>To be added.</summary>
 		///         <value>To be added.</value>

src/CoreGraphics/CGEventTypes.cs

@@ -12,9 +12,8 @@
 
 #if MONOMAC || __MACCATALYST__
 
-#if !NO_SYSTEM_DRAWING
 using System.Drawing;
-#endif
+
 using CoreFoundation;
 
 namespace CoreGraphics {

src/CoreGraphics/CGPoint.cs

@@ -1,12 +1,9 @@
 #nullable enable
 
+using System.Drawing;
 using System.Globalization;
 using System.Runtime.CompilerServices;
 
-#if !NO_SYSTEM_DRAWING
-using System.Drawing;
-#endif
-
 using CoreFoundation;
 
 namespace CoreGraphics {
@@ -47,7 +44,6 @@ public struct CGPoint : IEquatable<CGPoint> {
 			return new CGPoint (l.x - r.Width, l.y - r.Height);
 		}
 
-#if !NO_SYSTEM_DRAWING
 		public static implicit operator CGPoint (PointF point)
 		{
 			return new CGPoint (point.X, point.Y);
@@ -67,7 +63,6 @@ public static explicit operator Point (CGPoint point)
 		{
 			return new Point ((int) point.X, (int) point.Y);
 		}
-#endif
 
 		/// <param name="point">To be added.</param>
 		///         <param name="size">To be added.</param>

src/CoreGraphics/CGRect.cs

@@ -1,12 +1,9 @@
 #nullable enable
 
+using System.Drawing;
 using System.Globalization;
 using System.Runtime.CompilerServices;
 
-#if !NO_SYSTEM_DRAWING
-using System.Drawing;
-#endif
-
 using CoreFoundation;
 
 namespace CoreGraphics {
@@ -75,7 +72,6 @@ public static CGRect Infinite {
 				left.Height != right.Height;
 		}
 
-#if !NO_SYSTEM_DRAWING
 		public static implicit operator CGRect (RectangleF rect)
 		{
 			return new CGRect (rect.X, rect.Y, rect.Width, rect.Height);
@@ -95,7 +91,6 @@ public static explicit operator Rectangle (CGRect rect)
 		{
 			return new Rectangle ((int) rect.X, (int) rect.Y, (int) rect.Width, (int) rect.Height);
 		}
-#endif
 
 		/// <param name="a">
 		///           <attribution license="cc4" from="Microsoft" modified="false" />A rectangle to intersect. </param>

src/CoreGraphics/CGSize.cs

@@ -1,12 +1,9 @@
 #nullable enable
 
+using System.Drawing;
 using System.Globalization;
 using System.Runtime.CompilerServices;
 
-#if !NO_SYSTEM_DRAWING
-using System.Drawing;
-#endif
-
 using CoreFoundation;
 
 namespace CoreGraphics {
@@ -44,7 +41,6 @@ public struct CGSize : IEquatable<CGSize> {
 			return new CGSize (l.width - r.Width, l.height - r.Height);
 		}
 
-#if !NO_SYSTEM_DRAWING
 		public static implicit operator CGSize (SizeF size)
 		{
 			return new CGSize (size.Width, size.Height);
@@ -64,7 +60,6 @@ public static explicit operator Size (CGSize size)
 		{
 			return new Size ((int) size.Width, (int) size.Height);
 		}
-#endif
 
 		public static explicit operator CGPoint (CGSize size)
 		{

src/Foundation/NSObject2.cs

@@ -25,9 +25,7 @@
 using System.ComponentModel;
 using System.Runtime.CompilerServices;
 using System.Threading;
-#if !NO_SYSTEM_DRAWING
 using System.Drawing;
-#endif
 using System.Diagnostics;
 
 using System.Runtime.InteropServices.ObjectiveC;
@@ -881,14 +879,12 @@ public static NSObject FromObject (object obj)
 			default:
 				if (t == typeof (NativeHandle))
 					return NSValue.ValueFromPointer ((NativeHandle) obj);
-#if !NO_SYSTEM_DRAWING
 				if (t == typeof (SizeF))
 					return NSValue.FromSizeF ((SizeF) obj);
 				else if (t == typeof (RectangleF))
 					return NSValue.FromRectangleF ((RectangleF) obj);
 				else if (t == typeof (PointF))
 					return NSValue.FromPointF ((PointF) obj);
-#endif
 				if (t == typeof (nint))
 					return NSNumber.FromNInt ((nint) obj);
 				else if (t == typeof (nuint))

src/ObjCRuntime/Dlfcn.cs

@@ -32,14 +32,12 @@
 #nullable enable
 
 using System.ComponentModel;
+using System.Drawing;
 #if !COREBUILD
 using CoreFoundation;
 using CoreGraphics;
 using CoreMedia;
 #endif
-#if !NO_SYSTEM_DRAWING
-using System.Drawing;
-#endif
 
 namespace ObjCRuntime {
 

src/SpriteKit/SKKeyframeSequence.cs

@@ -8,9 +8,7 @@
 //
 
 using System.Collections.Generic;
-#if !NO_SYSTEM_DRAWING
 using System.Drawing;
-#endif
 
 #nullable enable