Merge pull request #213396 from sdgilley/sdg-main-toc2

TOC updates for v2

Author: v-dirichards

articles/machine-learning/toc.yml

@@ -119,7 +119,7 @@
       displayName: example, examples, studio, pipelines, data sets, modules, components
       href: samples-designer.md
     - name: End-to-end MLOps examples
-      href: https://github.com/microsoft/MLOps
+      href: https://github.com/Azure/mlops-v2
 - name: Concepts
   items: 
     - name: What is v2?
@@ -439,10 +439,6 @@
             href: how-to-train-scikit-learn.md
           - name: TensorFlow
             href: how-to-train-tensorflow.md
-          - name: Keras
-            href: how-to-train-keras.md
-          - name: PyTorch
-            href: how-to-train-pytorch.md
           - name: Train with custom Docker image
             href: how-to-train-with-custom-image.md
           - name: Use Key Vault when training