remove Python baseclass.

src/TensorFlowNET.Core/Estimator/TrainingExecutor.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Text;
+using static Tensorflow.Python;
 
 namespace Tensorflow.Estimator
 {
@@ -8,7 +9,7 @@ namespace Tensorflow.Estimator
     /// The executor to run `Estimator` training and evaluation.
     /// <see cref="tensorflow_estimator\python\estimator\training.py"/>
     /// </summary>
-    public class TrainingExecutor : Python
+    public class TrainingExecutor
     {
         private IEstimator _estimator;
         public TrainingExecutor(IEstimator estimator)

test/TensorFlowNET.Examples/Text/NER/CRF.cs

@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using System.Text;
 using Tensorflow;
+using static Tensorflow.Python;
 
 namespace TensorFlowNET.Examples
 {
@@ -12,7 +13,7 @@ namespace TensorFlowNET.Examples
     /// 
     /// tensorflow\contrib\crf\python\ops\crf.py
     /// </summary>
-    public class CRF : Python, IExample
+    public class CRF : IExample
     {
         public int Priority => 13;