Remove unneeded method.

src/Avalonia.Base/PropertyStore/BindingEntryBase.cs

@@ -79,13 +79,6 @@ namespace Avalonia.PropertyStore
             return _value!;
         }
 
-        bool IValueEntry.TryGetValue(out object? value)
-        {
-            Start(produceValue: false);
-            value = _value;
-            return _hasValue;
-        }
-
         protected abstract BindingValue<TValue> ConvertAndValidate(TSource value);
         protected abstract BindingValue<TValue> ConvertAndValidate(BindingValue<TSource> value);
 

src/Avalonia.Base/PropertyStore/IValueEntry.cs

@@ -22,18 +22,6 @@ namespace Avalonia.PropertyStore
         /// </exception>
         object? GetValue();
 
-        /// <summary>
-        /// Tries to get the value associated with the entry.
-        /// </summary>
-        /// <param name="value">
-        /// When this method returns, contains the value associated with the entry if a value is
-        /// present; otherwise, returns null.
-        /// </param>
-        /// <returns>
-        /// true if the entry has an associated value; otherwise false.
-        /// </returns>
-        bool TryGetValue(out object? value);
-
         /// <summary>
         /// Called when the value entry is removed from the value store.
         /// </summary>

src/Avalonia.Base/PropertyStore/ImmediateValueEntry.cs

@@ -21,12 +21,6 @@ namespace Avalonia.PropertyStore
         public bool HasValue => true;
         AvaloniaProperty IValueEntry.Property => Property;
 
-        public bool TryGetValue(out object? value)
-        {
-            value = _value;
-            return true;
-        }
-
         public void Unsubscribe() { }
 
         public void Dispose() => _owner.OnEntryDisposed(this);

src/Avalonia.Base/Styling/PropertySetterTemplateInstance.cs

@@ -17,17 +17,7 @@ namespace Avalonia.Styling
         public bool HasValue => true;
         public AvaloniaProperty Property { get; }
 
-        public object? GetValue()
-        {
-            TryGetValue(out var value);
-            return value;
-        }
-
-        public bool TryGetValue(out object? value)
-        {
-            value = _value ??= _template.Build();
-            return value != AvaloniaProperty.UnsetValue;
-        }
+        public object? GetValue() => _value ??= _template.Build();
 
         void IValueEntry.Unsubscribe() { }
     }

src/Avalonia.Base/Styling/Setter.cs

@@ -88,12 +88,6 @@ namespace Avalonia.Styling
 
         object? IValueEntry.GetValue() => Value;
 
-        bool IValueEntry.TryGetValue(out object? value)
-        {
-            value = Value;
-            return true;
-        }
-
         private AvaloniaProperty EnsureProperty()
         {
             return Property ?? throw new InvalidOperationException("Setter.Property must be set.");