dont require osx dylib to be available.

src/Avalonia.Native/Avalonia.Native.csproj

@@ -19,13 +19,4 @@
       <ProjectReference Include="..\Avalonia.OpenGL\Avalonia.OpenGL.csproj" />
       <ProjectReference Include="..\Avalonia.Visuals\Avalonia.Visuals.csproj" />
     </ItemGroup>
-
-
-    <ItemGroup Condition="'$(Configuration)' == 'Release'">
-      <Content Include="../../Build/Products/Release/libAvalonia.Native.OSX.dylib">
-        <PackagePath>runtimes/osx/native/libAvaloniaNative.dylib</PackagePath>
-        <Pack>true</Pack>
-        <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
-      </Content>
-  </ItemGroup>
 </Project>