dont implement datacontext on menuitems

src/Avalonia.Controls/NativeMenuItemBase.cs

@@ -2,7 +2,7 @@
 
 namespace Avalonia.Controls
 {
-    public class NativeMenuItemBase : AvaloniaObject, IDataContextProvider
+    public class NativeMenuItemBase : AvaloniaObject
     {
         private NativeMenu _parent;
 
@@ -11,7 +11,6 @@ namespace Avalonia.Controls
 
         }
 
-
         public static readonly DirectProperty<NativeMenuItem, NativeMenu> ParentProperty =
             AvaloniaProperty.RegisterDirect<NativeMenuItem, NativeMenu>("Parent", o => o.Parent, (o, v) => o.Parent = v);
 
@@ -20,26 +19,5 @@ namespace Avalonia.Controls
             get => _parent;
             set => SetAndRaise(ParentProperty, ref _parent, value);
         }
-
-        /// <summary>
-        /// Defines the <see cref="DataContext"/> property.
-        /// </summary>
-        public static readonly StyledProperty<object> DataContextProperty =
-            AvaloniaProperty.Register<Application, object>(
-                nameof(DataContext));
-
-        /// <summary>
-        /// Gets or sets the controls's data context.
-        /// </summary>
-        /// <remarks>
-        /// The data context property
-        /// specifies the default object that will
-        /// be used for data binding.
-        /// </remarks>
-        public object DataContext
-        {
-            get { return GetValue(DataContextProperty); }
-            set { SetValue(DataContextProperty, value); }
-        }
     }
 }