[CoreImage] Simplify CIFilter.OutputImage. (#22711)

Author: rolfbjarne

src/CoreImage/CIFilter.cs

@@ -305,15 +305,6 @@ internal CGRect GetRect (string key)
 			return v is not null ? new CGRect (v.X, v.Y, v.Z, v.W) : default (CGRect);
 		}
 
-#if MONOMAC
-		/// <summary>Gets the image that results from applying the filter to <see cref="P:CoreImage.CIFilter.Image" />.</summary>
-		///         <value>To be added.</value>
-		///         <remarks>To be added.</remarks>
-		public virtual CIImage? OutputImage {
-			get { return ValueForKey (CIFilterOutputKey.Image) as CIImage; }
-		}
-#endif
-
 		// Calls the selName selector for cases where we do not have an instance created
 		static internal string? GetFilterName (IntPtr filterHandle)
 		{

src/coreimage.cs

@@ -1131,8 +1131,7 @@ string Name {
 		[Export ("viewForUIConfiguration:excludedKeys:")]
 		IKFilterUIView GetFilterUIView (NSDictionary configurationOptions, [NullAllowed] NSArray excludedKeys);
 
-		// added in 10.10 but it was already accessible in a different way before (manual bindings)
-		[NoMac]
+		/// <summary>Gets the image that results from applying the filter.</summary>
 		[MacCatalyst (13, 1)]
 		[Export ("outputImage")]
 		[NullAllowed]

tests/xtro-sharpie/api-annotations-dotnet/macOS-CoreImage.ignore

@@ -6,5 +6,4 @@
 !missing-selector! +CIVector::vectorWithCGRect: not bound
 !missing-selector! CIFilter::apply: not bound
 !missing-selector! CIFilter::isEnabled not bound
-!missing-selector! CIFilter::outputImage not bound
 !missing-selector! CIFilter::setEnabled: not bound