migrate packages.config to PackageReference

Pilz.UI/Pilz.UI.vbproj

@@ -67,9 +67,6 @@
     <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
   </PropertyGroup>
   <ItemGroup>
-    <Reference Include="Newtonsoft.Json, Version=12.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
-      <HintPath>..\packages\Newtonsoft.Json.12.0.3\lib\net45\Newtonsoft.Json.dll</HintPath>
-    </Reference>
     <Reference Include="System" />
     <Reference Include="System.Data" />
     <Reference Include="System.Drawing" />
@@ -144,7 +141,6 @@
       <CustomToolNamespace>My</CustomToolNamespace>
       <LastGenOutput>Settings.Designer.vb</LastGenOutput>
     </None>
-    <None Include="packages.config" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\Pilz.Drawing\Pilz.Drawing.vbproj">
@@ -152,5 +148,10 @@
       <Name>Pilz.Drawing</Name>
     </ProjectReference>
   </ItemGroup>
+  <ItemGroup>
+    <PackageReference Include="Newtonsoft.Json">
+      <Version>12.0.3</Version>
+    </PackageReference>
+  </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.VisualBasic.targets" />
 </Project>

Pilz.UI/packages.config

@@ -1,4 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<packages>
-  <package id="Newtonsoft.Json" version="12.0.3" targetFramework="net472" />
-</packages>