Remove IsAutoUpdatingEnabled property from ColorSlider

This was unused and is an unnecessary complexity

src/Avalonia.Controls.ColorPicker/ColorSlider/ColorSlider.Properties.cs

@@ -48,14 +48,6 @@ namespace Avalonia.Controls.Primitives
                 nameof(IsAlphaMaxForced),
                 true);
 
-        /// <summary>
-        /// Defines the <see cref="IsAutoUpdatingEnabled"/> property.
-        /// </summary>
-        public static readonly StyledProperty<bool> IsAutoUpdatingEnabledProperty =
-            AvaloniaProperty.Register<ColorSlider, bool>(
-                nameof(IsAutoUpdatingEnabled),
-                true);
-
         /// <summary>
         /// Defines the <see cref="IsSaturationValueMaxForced"/> property.
         /// </summary>
@@ -119,19 +111,6 @@ namespace Avalonia.Controls.Primitives
             set => SetValue(IsAlphaMaxForcedProperty, value);
         }
 
-        /// <summary>
-        /// Gets or sets a value indicating whether automatic background and foreground updates will be
-        /// calculated when the set color changes.
-        /// </summary>
-        /// <remarks>
-        /// This can be disabled for performance reasons when working with multiple sliders.
-        /// </remarks>
-        public bool IsAutoUpdatingEnabled
-        {
-            get => GetValue(IsAutoUpdatingEnabledProperty);
-            set => SetValue(IsAutoUpdatingEnabledProperty, value);
-        }
-
         /// <summary>
         /// Gets or sets a value indicating whether the saturation and value components are always forced to maximum values
         /// when using the HSVA color model. Only component values other than <see cref="ColorComponent"/> will be changed.

src/Avalonia.Controls.ColorPicker/ColorSlider/ColorSlider.cs

@@ -327,13 +327,10 @@ namespace Avalonia.Controls.Primitives
 
                 HsvColor = Color.ToHsv();
 
-                if (IsAutoUpdatingEnabled)
-                {
-                    SetColorToSliderValues();
-                    UpdateBackground();
-                }
-
+                SetColorToSliderValues();
+                UpdateBackground();
                 UpdatePseudoClasses();
+
                 OnColorChanged(new ColorChangedEventArgs(
                     change.GetOldValue<Color>(),
                     change.GetNewValue<Color>()));
@@ -344,12 +341,8 @@ namespace Avalonia.Controls.Primitives
             {
                 disableUpdates = true;
 
-                if (IsAutoUpdatingEnabled)
-                {
-                    SetColorToSliderValues();
-                    UpdateBackground();
-                }
-
+                SetColorToSliderValues();
+                UpdateBackground();
                 UpdatePseudoClasses();
 
                 disableUpdates = false;
@@ -360,13 +353,10 @@ namespace Avalonia.Controls.Primitives
 
                 Color = HsvColor.ToRgb();
 
-                if (IsAutoUpdatingEnabled)
-                {
-                    SetColorToSliderValues();
-                    UpdateBackground();
-                }
-
+                SetColorToSliderValues();
+                UpdateBackground();
                 UpdatePseudoClasses();
+
                 OnColorChanged(new ColorChangedEventArgs(
                     change.GetOldValue<HsvColor>().ToRgb(),
                     change.GetNewValue<HsvColor>().ToRgb()));
@@ -375,10 +365,7 @@ namespace Avalonia.Controls.Primitives
             }
             else if (change.Property == BoundsProperty)
             {
-                if (IsAutoUpdatingEnabled)
-                {
-                    UpdateBackground();
-                }
+                UpdateBackground();
             }
             else if (change.Property == ValueProperty ||
                      change.Property == MinimumProperty ||