[Foundation] Adopt more XAMCORE_4_0 changes in .NET. (#14017)

This is just removing obsolete API.

src/foundation.cs

@@ -8802,13 +8802,13 @@ namespace Foundation
 		NSString ChangeNotificationIsPriorKey { get; }
 #if MONOMAC
 		// Cocoa Bindings added by Kenneth J. Pouncey 2010/11/17
-#if !XAMCORE_4_0
+#if !NET
 		[Sealed]
 #endif
 		[Export ("valueClassForBinding:")]
 		Class GetBindingValueClass (NSString binding);
 
-#if !XAMCORE_4_0
+#if !NET
 		[Obsolete ("Use 'Bind (NSString binding, NSObject observable, string keyPath, [NullAllowed] NSDictionary options)' instead.")]
 		[Export ("bind:toObject:withKeyPath:options:")]
 		void Bind (string binding, NSObject observable, string keyPath, [NullAllowed] NSDictionary options);
@@ -8845,25 +8845,25 @@ namespace Foundation
 		NSString[] ExposedBindings { get; }
 #endif
 
-#if !XAMCORE_4_0
+#if !NET
 		[Sealed]
 #endif
 		[Export ("bind:toObject:withKeyPath:options:")]
 		void Bind (NSString binding, NSObject observable, string keyPath, [NullAllowed] NSDictionary options);
 
-#if !XAMCORE_4_0
+#if !NET
 		[Sealed]
 #endif
 		[Export ("unbind:")]
 		void Unbind (NSString binding);
 
-#if !XAMCORE_4_0
+#if !NET
 		[Sealed]
 #endif
 		[Export ("infoForBinding:")]
 		NSDictionary GetBindingInfo (NSString binding);
 
-#if !XAMCORE_4_0
+#if !NET
 		[Sealed]
 #endif
 		[Export ("optionDescriptionsForBinding:")]

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

@@ -542,7 +542,7 @@
 !missing-null-allowed! 'Foundation.NSDictionary AppKit.NSTableView::get_RegisteredNibsByIdentifier()' is missing an [NullAllowed] on return type
 !missing-null-allowed! 'Foundation.NSDictionary AppKit.NSTrackingArea::get_UserInfo()' is missing an [NullAllowed] on return type
 !missing-null-allowed! 'Foundation.NSDictionary AppKit.NSWorkspace::DesktopImageOptions(AppKit.NSScreen)' is missing an [NullAllowed] on return type
-!missing-null-allowed! 'Foundation.NSDictionary Foundation.NSObject::BindingInfo(System.String)' is missing an [NullAllowed] on return type
+!missing-null-allowed! 'Foundation.NSDictionary Foundation.NSObject::GetBindingInfo(Foundation.NSString)' is missing an [NullAllowed] on return type
 !missing-null-allowed! 'Foundation.NSExpression[] AppKit.NSPredicateEditorRowTemplate::get_LeftExpressions()' is missing an [NullAllowed] on return type
 !missing-null-allowed! 'Foundation.NSExpression[] AppKit.NSPredicateEditorRowTemplate::get_RightExpressions()' is missing an [NullAllowed] on return type
 !missing-null-allowed! 'Foundation.NSFileWrapper AppKit.NSDocument::GetAsFileWrapper(System.String,Foundation.NSError&)' is missing an [NullAllowed] on return type
@@ -634,7 +634,7 @@
 !missing-null-allowed! 'ObjCRuntime.Class AppKit.NSDocumentController::DocumentClassForType(System.String)' is missing an [NullAllowed] on return type
 !missing-null-allowed! 'ObjCRuntime.Class AppKit.NSImageRep::ImageRepClassForData(Foundation.NSData)' is missing an [NullAllowed] on return type
 !missing-null-allowed! 'ObjCRuntime.Class AppKit.NSImageRep::ImageRepClassForType(System.String)' is missing an [NullAllowed] on return type
-!missing-null-allowed! 'ObjCRuntime.Class Foundation.NSObject::BindingValueClass(System.String)' is missing an [NullAllowed] on return type
+!missing-null-allowed! 'ObjCRuntime.Class Foundation.NSObject::GetBindingValueClass(Foundation.NSString)' is missing an [NullAllowed] on return type
 !missing-null-allowed! 'System.Boolean AppKit.NSBrowser::IsLeafItem(Foundation.NSObject)' is missing an [NullAllowed] on parameter #0
 !missing-null-allowed! 'System.Boolean AppKit.NSBrowserDelegate::IsLeafItem(AppKit.NSBrowser,Foundation.NSObject)' is missing an [NullAllowed] on parameter #1
 !missing-null-allowed! 'System.Boolean AppKit.NSBrowserDelegate::ShouldEditItem(AppKit.NSBrowser,Foundation.NSObject)' is missing an [NullAllowed] on parameter #1