Ignored columns shouldn't be included in the generated ModelInput/ModelOutput code.  Root cause is that ignored columns are being included in the DataViewSchema. Code is [here](https://github.com/dotnet/machinelearning-tools/blob/bcbe5f148badb13358f4e06c97b6045d2c40bad4/src/Microsoft.ML.ModelBuilder.CodeGenerator/Utils.cs#L94).
Ignored columns shouldn't be included in the generated ModelInput/ModelOutput code.
Root cause is that ignored columns are being included in the DataViewSchema. Code is here.