rm extra link

Author: PatrickFarley

articles/cognitive-services/Computer-vision/toc.yml

@@ -12,8 +12,6 @@ items:
     href: language-support.md
   - name: Pricing
     href: https://azure.microsoft.com/pricing/details/cognitive-services/computer-vision
-  - name: Vision Studio
-    href: overview-vision-studio.md
   - name: What's new
     href: whats-new.md
   - name: Computer Vision FAQ