review comments

Author: artidoro

src/Microsoft.ML.EntryPoints/FeatureCombiner.cs

@@ -300,18 +300,6 @@ public static CommonOutputs.TransformOutput PrepareRegressionLabel(IHostEnvironm
                 return new CommonOutputs.TransformOutput { Model = new TransformModelImpl(env, nop, input.Data), OutputData = nop };
             }
 
-            var args = new TypeConvertingTransformer.Options()
-            {
-                Columns = new[]
-                {
-                    new TypeConvertingTransformer.Column()
-                    {
-                        Name = input.LabelColumn,
-                        Source = input.LabelColumn,
-                        ResultType = DataKind.R4
-                    }
-                }
-            };
             var xf = new TypeConvertingTransformer(host, new TypeConvertingEstimator.ColumnInfo(input.LabelColumn, DataKind.R4, input.LabelColumn)).Transform(input.Data);
             return new CommonOutputs.TransformOutput { Model = new TransformModelImpl(env, xf, input.Data), OutputData = xf };
         }