Remove NoWarn for Uno0001 in project file

This commit removes the `<PropertyGroup>` that suppressed the `Uno0001` warning in the WinUI.Dock.csproj file. The package references for `Microsoft.WindowsAppSDK`, `Uno.Fonts.Fluent`, and `Uno.WinUI` remain unchanged.

Author: qian-o

src/WinUI.Dock/WinUI.Dock.csproj

@@ -50,10 +50,6 @@
             </ItemGroup>
         </When>
         <Otherwise>
-            <PropertyGroup>
-                <NoWarn>Uno0001</NoWarn>
-            </PropertyGroup>
-
             <ItemGroup>
                 <PackageReference Include="Uno.Fonts.Fluent" />
                 <PackageReference Include="Uno.WinUI" />