Remove leftover style

Author: Sergio0694

samples/MvvmSampleUwp/App.xaml

@@ -2,7 +2,6 @@
     x:Class="MvvmSampleUwp.App"
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-    xmlns:controls="using:Microsoft.Toolkit.Uwp.UI.Controls"
     RequestedTheme="Dark">
     <Application.Resources>
         <ResourceDictionary>
@@ -14,19 +13,6 @@
                 <ResourceDictionary Source="Controls/DocumentationBlock.xaml" />
             </ResourceDictionary.MergedDictionaries>
 
-            <!--  MarkdownTextBlock style  -->
-            <Style TargetType="controls:MarkdownTextBlock">
-                <Setter Property="Background" Value="#20222222" />
-                <Setter Property="Padding" Value="12" />
-                <Setter Property="BorderThickness" Value="1" />
-                <Setter Property="BorderBrush" Value="{ThemeResource SystemChromeBlackLowColor}" />
-                <Setter Property="CornerRadius" Value="4" />
-                <Setter Property="Header2FontWeight" Value="Bold" />
-                <Setter Property="Header2FontSize" Value="20" />
-                <Setter Property="Header2Margin" Value="0, 15, 0, 15" />
-                <Setter Property="Header2Foreground" Value="{ThemeResource DefaultTextForegroundThemeBrush}" />
-            </Style>
-
             <!--  Misc resources  -->
             <Thickness x:Key="DocumentationPageContentPadding">20</Thickness>
         </ResourceDictionary>

samples/MvvmSampleUwp/Controls/DocumentationBlock.xaml

@@ -21,6 +21,7 @@
                         BorderThickness="1"
                         CornerRadius="4">
                         <controls:MarkdownTextBlock
+                            Padding="12"
                             Background="Transparent"
                             BorderBrush="Transparent"
                             BorderThickness="0"