[Settings] Removed muxc prefix (#20164)

* Removed prefix

Quick deletion. Quick run in VS gave no problems.

* Removed prefix

Quick deletion. Quick run in VS gave no problems.

* update for new files

* Remove using muxc includes

src/settings-ui/Settings.UI/Views/ShortcutGuidePage.xaml

@@ -5,7 +5,6 @@
     xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
     xmlns:controls="using:Microsoft.PowerToys.Settings.UI.Controls"
-    xmlns:muxc="using:Microsoft.UI.Xaml.Controls"
     xmlns:converters="using:CommunityToolkit.WinUI.UI.Converters"
     mc:Ignorable="d"
     AutomationProperties.LandmarkType="Main">
@@ -50,7 +49,7 @@
 
                     <controls:Setting x:Uid="ShortcutGuide_PressTime" Icon="&#xE916;" Visibility="{x:Bind Mode=OneWay, Path=ViewModel.UseLegacyPressWinKeyBehavior, Converter={StaticResource TrueToVisibleConverter}}">
                         <controls:Setting.ActionContent>
-                            <muxc:NumberBox
+                            <NumberBox
                                 Minimum="100"
                                 Value="{x:Bind Mode=TwoWay, Path=ViewModel.PressTime}"
                                 MinWidth="{StaticResource SettingActionControlMinWidth}"
@@ -62,7 +61,7 @@
                         </controls:Setting.ActionContent>
                     </controls:Setting>
 
-                    <muxc:InfoBar
+                    <InfoBar
                         x:Uid="ShortcutGuide_PressWinKeyWarning"
                         Severity="Warning"
                         IsTabStop="True"