delete related part in toc and module reference

Author: likebupt

articles/machine-learning/algorithm-module-reference/module-reference.md

@@ -52,7 +52,7 @@ For help with choosing algorithms, see
 | R language | Write code and embed it in a module to integrate R with your pipeline. | [Execute R Script](execute-r-script.md) |
 | Text Analytics | Provide specialized computational tools for working with both structured and unstructured text. | [Extract N Gram Features from Text](extract-n-gram-features-from-text.md) <br/> [Feature Hashing](feature-hashing.md) <br/> [Preprocess Text](preprocess-text.md) |
 | Recommendation | Build recommendation models. | [Evaluate Recommender](evaluate-recommender.md) <br/> [Score SVD Recommender](score-svd-recommender.md) <br/> [Train SVD Recommender](train-SVD-recommender.md) |
-| Anomaly detection | Build anomaly detection models. | [PCA-Based Anomaly Detection](pca-based-anomaly-detection.md) <br/> [Train Anomaly Detection Model](train-anomaly-detection-model.md) |
+
 
 ## Error messages
 

articles/machine-learning/algorithm-module-reference/toc.yml

@@ -144,12 +144,6 @@
     href: score-svd-recommender.md
   - name: Train SVD Recommender
     href: train-svd-recommender.md
-- name: Anomaly detection
-  items: 
-  - name: PCA-Based Anomaly Detection
-    href: pca-based-anomaly-detection.md
-  - name: Train Anomaly Detection Model
-    href: train-anomaly-detection-model.md
 - name: Module errors & troubleshooting
   href: designer-error-codes.md