Revert

Author: Youssef1313

src/NetAnalyzers/UnitTests/Microsoft.CodeAnalysis.NetAnalyzers.UnitTests.csproj

@@ -7,7 +7,6 @@
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.CodeAnalysis" Version="$(MicrosoftCodeAnalysisVersionForTests)" />
-    <PackageReference Include="Newtonsoft.Json" Version="9.0.0" NoWarn="NU1605;NU1603" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\..\Test.Utilities\Test.Utilities.csproj" />