Remove Newtonsoft.Json package reference

Author: cnblogs-dudu

Enyim.Caching/Enyim.Caching.csproj

@@ -20,7 +20,6 @@
     <PackageReference Include="Microsoft.Extensions.Configuration.Abstractions" Version="2.1.1" />
     <PackageReference Include="Microsoft.Extensions.Options.ConfigurationExtensions" Version="2.1.1" />
     <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="2.1.1" />
-    <PackageReference Include="Newtonsoft.Json" Version="11.0.2" />
     <PackageReference Include="Microsoft.Extensions.Options" Version="2.1.1" />
     <PackageReference Include="Microsoft.Extensions.Caching.Abstractions" Version="2.1.2" />
     <PackageReference Include="Microsoft.AspNetCore.Http.Abstractions" Version="2.1.1" />