Remove binary / varbinary support (reverse PR 117)

[MV10]

PR #117 added support for binary and varbinary SQL column data types, but it doesn't work -- and can't work.

If you try to actually create a SQL binary column and populate it, the sink throws an exception because Serilog's internal property-handling has already converted the byte array property data to a clipped string stored as a ScalarValue object. The sink never sees the byte array and the string data is a mismatch for the column type.

The sink couldn't support this type of data unless Serilog's own internal property-handling changed, which seems unlikely...

The code to reproduce this is simple enough:

static void Main(string[] args)
{
    var appConfig = new ConfigurationBuilder().SetBasePath(Directory.GetCurrentDirectory()).AddJsonFile("appconfig.json").Build();
    Log.Logger = new LoggerConfiguration().ReadFrom.Configuration(appConfig).CreateLogger();
    var smaller = new byte[60];
    var larger = new byte[1024];
    Random random = new Random();
    random.NextBytes(smaller);
    random.NextBytes(larger);
    SelfLog.Enable(Console.Out);
    Log.Information("smaller {ba_binary}", smaller);
    Log.Information("larger {ba_binary)", larger);
    Log.Information("var smaller {ba_varbinary}", smaller);
    Log.Information("var larger {ba_varbinary)", larger);
    Log.CloseAndFlush();
    Console.WriteLine("Press any key...");
    Console.ReadKey();
}

{
  "ConnectionStrings": {
    "DevTest": "Data Source=(LocalDB)\\MSSQLLocalDB;Initial Catalog=SerilogTest;Integrated Security=true"
  },
  "Serilog": {
    "Using": [ "Serilog.Sinks.Console" ],
    "WriteTo": [
      { "Name": "Console" },
      {
        "Name": "MSSqlServer",
        "Args": {
          "connectionString": "DevTest",
          "tableName": "PR117",
          "autoCreateSqlTable": true,
          "columnOptionsSection": {
            "customColumns": [
              {
                "ColumnName": "ba_binary",
                "DataType": "binary",
                "DataLength": 512
              },
              {
                "ColumnName": "ba_varbinary",
                "DataType": "varbinary",
                "DataLength": 2048
              }
            ]
          }
        }
      }
    ]
  }
}