feat: clean up useless resource.

src/Avalonia.Themes.Fluent/Accents/FluentControlResourcesDark.xaml

@@ -451,8 +451,6 @@
     <!-- Resources for TimePicker.xaml -->
     <StaticResource x:Key="TimePickerSpacerFill" ResourceKey="SystemControlForegroundBaseLowBrush" />
     <StaticResource x:Key="TimePickerSpacerFillDisabled" ResourceKey="SystemControlDisabledBaseLowBrush" />
-    <StaticResource x:Key="TimePickerHeaderForeground" ResourceKey="SystemControlForegroundBaseHighBrush" />
-    <StaticResource x:Key="TimePickerHeaderForegroundDisabled" ResourceKey="SystemControlDisabledBaseMediumLowBrush" />
     <StaticResource x:Key="TimePickerButtonBorderBrush" ResourceKey="SystemControlForegroundBaseMediumBrush" />
     <StaticResource x:Key="TimePickerButtonBorderBrushPointerOver" ResourceKey="SystemControlHighlightBaseMediumHighBrush" />
     <StaticResource x:Key="TimePickerButtonBorderBrushPressed" ResourceKey="SystemControlHighlightBaseMediumBrush" />

src/Avalonia.Themes.Fluent/Accents/FluentControlResourcesLight.xaml

@@ -446,8 +446,6 @@
     <!-- Resources for TimePicker.xaml -->
     <StaticResource x:Key="TimePickerSpacerFill" ResourceKey="SystemControlForegroundBaseLowBrush" />
     <StaticResource x:Key="TimePickerSpacerFillDisabled" ResourceKey="SystemControlDisabledBaseLowBrush" />
-    <StaticResource x:Key="TimePickerHeaderForeground" ResourceKey="SystemControlForegroundBaseHighBrush" />
-    <StaticResource x:Key="TimePickerHeaderForegroundDisabled" ResourceKey="SystemControlDisabledBaseMediumLowBrush" />
     <StaticResource x:Key="TimePickerButtonBorderBrush" ResourceKey="SystemControlForegroundBaseMediumBrush" />
     <StaticResource x:Key="TimePickerButtonBorderBrushPointerOver" ResourceKey="SystemControlHighlightBaseMediumHighBrush" />
     <StaticResource x:Key="TimePickerButtonBorderBrushPressed" ResourceKey="SystemControlHighlightBaseMediumBrush" />

src/Avalonia.Themes.Fluent/Controls/TimePicker.xaml

@@ -31,7 +31,6 @@
   <x:Double x:Key="TimePickerFlyoutPresenterItemHeight">40</x:Double>
   <x:Double x:Key="TimePickerSpacerThemeWidth">1</x:Double>
   <Thickness x:Key="TimePickerBorderThemeThickness">1</Thickness>
-  <Thickness x:Key="TimePickerTopHeaderMargin">0,0,0,4</Thickness>
   <x:Double x:Key="TimePickerFlyoutPresenterHighlightHeight">40</x:Double>
   <x:Double x:Key="TimePickerFlyoutPresenterAcceptDismissHostGridHeight">41</x:Double>
   <x:Double x:Key="TimePickerThemeMinWidth">242</x:Double>

src/Avalonia.Themes.Simple/Controls/TimePicker.xaml

@@ -33,7 +33,6 @@
   <x:Double x:Key="TimePickerFlyoutPresenterItemHeight">40</x:Double>
   <x:Double x:Key="TimePickerSpacerThemeWidth">1</x:Double>
   <Thickness x:Key="TimePickerBorderThemeThickness">1</Thickness>
-  <Thickness x:Key="TimePickerTopHeaderMargin">0,0,0,4</Thickness>
   <x:Double x:Key="TimePickerFlyoutPresenterHighlightHeight">40</x:Double>
   <x:Double x:Key="TimePickerFlyoutPresenterAcceptDismissHostGridHeight">41</x:Double>
   <x:Double x:Key="TimePickerThemeMinWidth">242</x:Double>