fix: Remove unused native library block from SkiaSharp.Views.Uno.WinUI (#2231)

Author: jeromelaban

source/SkiaSharp.Views.Uno/SkiaSharp.Views.Uno.Reference/nuget/build/netstandard2.0/SkiaSharp.Views.Uno.targets

@@ -5,8 +5,4 @@
     <UnoRuntimeEnabledPackage Include="SkiaSharp.Views.Uno" PackageBasePath="$(MSBuildThisFileDirectory)..\" />
   </ItemGroup>
 
-  <ItemGroup>
-    <Content Include="$(SkiaSharpStaticLibraryPath)" Visible="false" />
-  </ItemGroup>
-
 </Project>

source/SkiaSharp.Views.Uno/SkiaSharp.Views.Uno.WinUI.Reference/nuget/build/netstandard2.0/SkiaSharp.Views.Uno.WinUI.targets

@@ -1,12 +1,8 @@
 <?xml version="1.0" encoding="utf-8" ?>
 <Project>
 
-    <ItemGroup>
-        <UnoRuntimeEnabledPackage Include="SkiaSharp.Views.Uno.WinUI" PackageBasePath="$(MSBuildThisFileDirectory)..\" />
-    </ItemGroup>
-
-    <ItemGroup>
-        <Content Include="$(SkiaSharpStaticLibraryPath)" Visible="false" />
-    </ItemGroup>
+  <ItemGroup>
+    <UnoRuntimeEnabledPackage Include="SkiaSharp.Views.Uno.WinUI" PackageBasePath="$(MSBuildThisFileDirectory)..\" />
+  </ItemGroup>
 
 </Project>