removed not used fields
removed not used fields

sendgrid/sendgrid-csharp,FriskyLingo/sendgrid-csharp,dubrovkinmaxim/sendgrid-csharp,kenlefeb/sendgrid-csharp,FriskyLingo/sendgrid-csharp,sumeshthomas/sendgrid-csharp,pandeysoni/sendgrid-csharp,brcaswell/sendgrid-csharp,brcaswell/sendgrid-csharp,sendgrid/sendgrid-csharp,kenlefeb/sendgrid-csharp,pandeysoni/sendgrid-csharp,smurfpandey/sendgrid-csharp-net40,smurfpandey/sendgrid-csharp-net40,sendgrid/sendgrid-csharp,dubrovkinmaxim/sendgrid-csharp,sumeshthomas/sendgrid-csharp