Resolve complier warnings by

1. Disable warning 612 reported in test file
2. Remove Microsoft.ML.PipelineInference project
3. Remove two commands used in pipeline inference.
   - InferRecipesCommand.cs
   - InferSchemaCommand.cs
Note that we add [Obsolete] to everything in Microsoft.ML.Legacy but auto-generated APIs.

Author: wschin

Microsoft.ML.sln

@@ -15,8 +15,6 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Microsoft.ML.Core.Tests", "
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Microsoft.ML.CpuMath", "src\Microsoft.ML.CpuMath\Microsoft.ML.CpuMath.csproj", "{46F2F967-C23F-4076-858D-33F7DA9BD2DA}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Microsoft.ML.PipelineInference", "src\Microsoft.ML.PipelineInference\Microsoft.ML.PipelineInference.csproj", "{2D7391C9-8254-4B8F-BF26-FADAF8F02F44}"
-EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Microsoft.ML.Data", "src\Microsoft.ML.Data\Microsoft.ML.Data.csproj", "{AD92D96B-0E96-4F22-8DCE-892E13B1F282}"
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Microsoft.ML.Onnx", "src\Microsoft.ML.Onnx\Microsoft.ML.Onnx.csproj", "{65D0603E-B96C-4DFC-BDD1-705891B88C18}"
@@ -165,14 +163,6 @@ Global
 		{46F2F967-C23F-4076-858D-33F7DA9BD2DA}.Release|Any CPU.Build.0 = Release|Any CPU
 		{46F2F967-C23F-4076-858D-33F7DA9BD2DA}.Release-Intrinsics|Any CPU.ActiveCfg = Release-Intrinsics|Any CPU
 		{46F2F967-C23F-4076-858D-33F7DA9BD2DA}.Release-Intrinsics|Any CPU.Build.0 = Release-Intrinsics|Any CPU
-		{2D7391C9-8254-4B8F-BF26-FADAF8F02F44}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{2D7391C9-8254-4B8F-BF26-FADAF8F02F44}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{2D7391C9-8254-4B8F-BF26-FADAF8F02F44}.Debug-Intrinsics|Any CPU.ActiveCfg = Debug-Intrinsics|Any CPU
-		{2D7391C9-8254-4B8F-BF26-FADAF8F02F44}.Debug-Intrinsics|Any CPU.Build.0 = Debug-Intrinsics|Any CPU
-		{2D7391C9-8254-4B8F-BF26-FADAF8F02F44}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{2D7391C9-8254-4B8F-BF26-FADAF8F02F44}.Release|Any CPU.Build.0 = Release|Any CPU
-		{2D7391C9-8254-4B8F-BF26-FADAF8F02F44}.Release-Intrinsics|Any CPU.ActiveCfg = Release-Intrinsics|Any CPU
-		{2D7391C9-8254-4B8F-BF26-FADAF8F02F44}.Release-Intrinsics|Any CPU.Build.0 = Release-Intrinsics|Any CPU
 		{AD92D96B-0E96-4F22-8DCE-892E13B1F282}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{AD92D96B-0E96-4F22-8DCE-892E13B1F282}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{AD92D96B-0E96-4F22-8DCE-892E13B1F282}.Debug-Intrinsics|Any CPU.ActiveCfg = Debug-Intrinsics|Any CPU
@@ -509,7 +499,6 @@ Global
 		{A6CA6CC6-5D7C-4D7F-A0F5-35E14B383B0A} = {09EADF06-BE25-4228-AB53-95AE3E15B530}
 		{EC743D1D-7691-43B7-B9B0-5F2F7018A8F6} = {AED9C836-31E3-4F3F-8ABC-929555D3F3C4}
 		{46F2F967-C23F-4076-858D-33F7DA9BD2DA} = {09EADF06-BE25-4228-AB53-95AE3E15B530}
-		{2D7391C9-8254-4B8F-BF26-FADAF8F02F44} = {09EADF06-BE25-4228-AB53-95AE3E15B530}
 		{AD92D96B-0E96-4F22-8DCE-892E13B1F282} = {09EADF06-BE25-4228-AB53-95AE3E15B530}
 		{65D0603E-B96C-4DFC-BDD1-705891B88C18} = {09EADF06-BE25-4228-AB53-95AE3E15B530}
 		{707BB22C-7E5F-497A-8C2F-74578F675705} = {09EADF06-BE25-4228-AB53-95AE3E15B530}

src/Microsoft.ML.Console/Microsoft.ML.Console.csproj

@@ -21,7 +21,6 @@
     <ProjectReference Include="..\Microsoft.ML.OnnxTransform\Microsoft.ML.OnnxTransform.csproj" />
     <ProjectReference Include="..\Microsoft.ML.Onnx\Microsoft.ML.Onnx.csproj" />
     <ProjectReference Include="..\Microsoft.ML.PCA\Microsoft.ML.PCA.csproj" />
-    <ProjectReference Include="..\Microsoft.ML.PipelineInference\Microsoft.ML.PipelineInference.csproj" />
     <ProjectReference Include="..\Microsoft.ML.Recommender\Microsoft.ML.Recommender.csproj" />
     <ProjectReference Include="..\Microsoft.ML.ResultProcessor\Microsoft.ML.ResultProcessor.csproj" />
     <ProjectReference Include="..\Microsoft.ML.StandardLearners\Microsoft.ML.StandardLearners.csproj" />

test/Microsoft.ML.Benchmarks/LegacyPredictionEngineBench.cs

@@ -10,6 +10,7 @@
 
 namespace Microsoft.ML.Benchmarks
 {
+#pragma warning disable 612
     public class LegacyPredictionEngineBench
     {
         private IrisData _irisExample;
@@ -104,4 +105,5 @@ public void MakeBreastCancerPredictions()
             }
         }
     }
+#pragma warning restore 612
 }

test/Microsoft.ML.Benchmarks/StochasticDualCoordinateAscentClassifierBench.cs

@@ -18,6 +18,7 @@
 
 namespace Microsoft.ML.Benchmarks
 {
+#pragma warning disable 612
     public class StochasticDualCoordinateAscentClassifierBench : WithExtraMetrics
     {
         private readonly string _dataPath = Program.GetInvariantCultureDataPath("iris.txt");
@@ -190,4 +191,5 @@ public class IrisPrediction
         [ColumnName("Score")]
         public float[] PredictedLabels;
     }
+#pragma warning restore 612
 }

test/Microsoft.ML.Core.Tests/Microsoft.ML.Core.Tests.csproj

@@ -14,7 +14,6 @@
     <ProjectReference Include="..\..\src\Microsoft.ML.LightGBM\Microsoft.ML.LightGBM.csproj" />
     <ProjectReference Include="..\..\src\Microsoft.ML.Onnx\Microsoft.ML.Onnx.csproj" />
     <ProjectReference Include="..\..\src\Microsoft.ML.PCA\Microsoft.ML.PCA.csproj" />
-    <ProjectReference Include="..\..\src\Microsoft.ML.PipelineInference\Microsoft.ML.PipelineInference.csproj" />
     <ProjectReference Include="..\..\src\Microsoft.ML.StandardLearners\Microsoft.ML.StandardLearners.csproj" />
     <ProjectReference Include="..\..\src\Microsoft.ML.TensorFlow\Microsoft.ML.TensorFlow.csproj" />
     <ProjectReference Include="..\..\src\Microsoft.ML.TimeSeries\Microsoft.ML.TimeSeries.csproj" />

test/Microsoft.ML.Core.Tests/UnitTests/TestCSharpApi.cs

@@ -15,6 +15,7 @@
 
 namespace Microsoft.ML.Runtime.RunTests
 {
+#pragma warning disable 612
     public class TestCSharpApi : BaseTestClass
     {
         public TestCSharpApi(ITestOutputHelper output) : base(output)
@@ -980,4 +981,5 @@ public void TestTensorFlowEntryPoint()
             Assert.Equal(10, (schema.GetColumnType(2) as VectorType)?.Size);
         }
     }
+#pragma warning restore 612
 }

test/Microsoft.ML.Core.Tests/UnitTests/TestEntryPoints.cs

@@ -17,8 +17,6 @@
 using Microsoft.ML.Runtime.Learners;
 using Microsoft.ML.Runtime.LightGBM;
 using Microsoft.ML.Runtime.Model.Onnx;
-using Microsoft.ML.Runtime.PipelineInference;
-using Microsoft.ML.Runtime.TextAnalytics;
 using Microsoft.ML.Runtime.TimeSeriesProcessing;
 using Microsoft.ML.Trainers;
 using Microsoft.ML.Trainers.FastTree;
@@ -41,6 +39,7 @@
 
 namespace Microsoft.ML.Runtime.RunTests
 {
+#pragma warning disable 612
     public partial class TestEntryPoints : CoreBaseTestClass
     {
         public TestEntryPoints(ITestOutputHelper output) : base(output)
@@ -351,7 +350,6 @@ public void EntryPointCatalogCheckDuplicateParams()
             Env.ComponentCatalog.RegisterAssembly(typeof(TensorFlowTransform).Assembly);
             Env.ComponentCatalog.RegisterAssembly(typeof(ImageLoaderTransform).Assembly);
             Env.ComponentCatalog.RegisterAssembly(typeof(SymSgdClassificationTrainer).Assembly);
-            Env.ComponentCatalog.RegisterAssembly(typeof(AutoInference).Assembly);
             Env.ComponentCatalog.RegisterAssembly(typeof(SaveOnnxCommand).Assembly);
             Env.ComponentCatalog.RegisterAssembly(typeof(TimeSeriesProcessing.TimeSeriesProcessing).Assembly);
 
@@ -4042,4 +4040,5 @@ public void EntryPointSlidingWindow()
                 });
         }
     }
+#pragma warning restore 612
 }

test/Microsoft.ML.FSharp.Tests/Microsoft.ML.FSharp.Tests.fsproj

@@ -37,11 +37,11 @@
     <ProjectReference Include="..\..\src\Microsoft.ML.Onnx\Microsoft.ML.Onnx.csproj" />
     <ProjectReference Include="..\..\src\Microsoft.ML.Parquet\Microsoft.ML.Parquet.csproj" />
     <ProjectReference Include="..\..\src\Microsoft.ML.PCA\Microsoft.ML.PCA.csproj" />
-    <ProjectReference Include="..\..\src\Microsoft.ML.PipelineInference\Microsoft.ML.PipelineInference.csproj" />
     <ProjectReference Include="..\..\src\Microsoft.ML.ResultProcessor\Microsoft.ML.ResultProcessor.csproj" />
     <ProjectReference Include="..\..\src\Microsoft.ML.StandardLearners\Microsoft.ML.StandardLearners.csproj" />
     <ProjectReference Include="..\..\src\Microsoft.ML.Sweeper\Microsoft.ML.Sweeper.csproj" />
     <ProjectReference Include="..\..\src\Microsoft.ML.Transforms\Microsoft.ML.Transforms.csproj" />
+    <ProjectReference Include="..\..\src\Microsoft.ML.Legacy\Microsoft.ML.Legacy.csproj" />
   </ItemGroup>
   <ItemGroup>
     <NativeAssemblyReference Include="FastTreeNative" />

test/Microsoft.ML.OnnxTransformTest/Microsoft.ML.OnnxTransformTest.csproj

@@ -3,7 +3,6 @@
     <ProjectReference Include="..\..\src\Microsoft.ML.Data\Microsoft.ML.Data.csproj" />
     <ProjectReference Include="..\..\src\Microsoft.ML.Maml\Microsoft.ML.Maml.csproj" />
     <ProjectReference Include="..\..\src\Microsoft.ML.ImageAnalytics\Microsoft.ML.ImageAnalytics.csproj" />
-    <ProjectReference Include="..\..\src\Microsoft.ML.PipelineInference\Microsoft.ML.PipelineInference.csproj" />
     <ProjectReference Include="..\..\src\Microsoft.ML.OnnxTransform\Microsoft.ML.OnnxTransform.csproj" />
     <ProjectReference Include="..\Microsoft.ML.Predictor.Tests\Microsoft.ML.Predictor.Tests.csproj" />
     <ProjectReference Include="..\Microsoft.ML.TestFramework\Microsoft.ML.TestFramework.csproj" />

test/Microsoft.ML.Predictor.Tests/Commands/InferRecipesCommand.cs

@@ -11,7 +11,6 @@
     <ProjectReference Include="..\..\src\Microsoft.ML.KMeansClustering\Microsoft.ML.KMeansClustering.csproj" />
     <ProjectReference Include="..\..\src\Microsoft.ML.LightGBM\Microsoft.ML.LightGBM.csproj" />
     <ProjectReference Include="..\..\src\Microsoft.ML.PCA\Microsoft.ML.PCA.csproj" />
-    <ProjectReference Include="..\..\src\Microsoft.ML.PipelineInference\Microsoft.ML.PipelineInference.csproj" />
     <ProjectReference Include="..\..\src\Microsoft.ML.StandardLearners\Microsoft.ML.StandardLearners.csproj" />
     <ProjectReference Include="..\..\src\Microsoft.ML.Transforms\Microsoft.ML.Transforms.csproj" />
     <ProjectReference Include="..\..\src\Microsoft.ML.Legacy\Microsoft.ML.Legacy.csproj" />
@@ -26,4 +25,8 @@
     <NativeAssemblyReference Include="MklImports" />
   </ItemGroup>
 
+  <ItemGroup>
+    <Folder Include="Commands\" />
+  </ItemGroup>
+  
 </Project>