Remove accuracy/confidence page until it is updated

Author: bojunehsu

articles/ai-services/content-understanding/toc.yml

@@ -70,9 +70,6 @@ items:
     - name: Best practices
       displayName: best practices, analyzers, optimization, fields
       href: concepts/best-practices.md
-    - name: Accuracy and confidence
-      displayName: accuracy, confidence, analyzers, optimization, fields, scores
-      href: concepts/accuracy-confidence.md
     - name: "🆕 Modes: standard and pro"
       displayName: standard, pro, modes, analyzers, optimization, fields
       href: concepts/standard-pro-modes.md