Removed environments section from landing page.

Author: RoseHJM

articles/devtest-labs/index.yml

@@ -47,18 +47,6 @@ landingContent:
             url: devtest-lab-mandatory-artifacts.md 
           - text: Troubleshoot artifact failures
             url: devtest-lab-troubleshoot-artifact-failure.md
-  - title: Environments
-    linkLists:
-      - linkListType: how-to-guide
-        links:
-          - text: Configure & use public environments 
-            url: devtest-lab-configure-use-public-environments.md
-          - text: Create an environment
-            url: devtest-lab-create-environment-from-arm.md
-          - text: Use platform-as-a-service services
-            url: use-paas-services.md 
-          - text: Connect to lab's virtual network
-            url: connect-environment-lab-virtual-network.md  
   - title: Templates
     linkLists:
       - linkListType: concept