Invalid reference

Author: eiximenis

src/Mobile/eShopOnContainers/eShopOnContainers.Core/eShopOnContainers.Core.csproj

@@ -290,11 +290,6 @@
       <SubType>Designer</SubType>
     </EmbeddedResource>
   </ItemGroup>
-  <ItemGroup>
-    <Reference Include="System.ComponentModel.Annotations">
-      <HintPath>..\..\..\..\..\..\..\..\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETPortable\v4.6\Profile\Profile44\System.ComponentModel.Annotations.dll</HintPath>
-    </Reference>
-  </ItemGroup>
   <ItemGroup>
     <EmbeddedResource Include="Views\CampaignDetailsView.xaml">
       <Generator>MSBuild:UpdateDesignTimeXaml</Generator>

src/Mobile/eShopOnContainers/eShopOnContainers.Core/project.json

@@ -10,6 +10,7 @@
     "Newtonsoft.Json": "9.0.1",
     "SlideOverKit": "2.1.4",
     "Splat": "1.6.2",
+    "System.ComponentModel.Annotations": "4.3.0",
     "Xam.Plugin.Geolocator": "3.0.4",
     "Xam.Plugins.Settings": "2.6.0.12-beta",
     "Xamarin.FFImageLoading": "2.2.9",