Work CI-CD

- Remove install of nbgv. Now it's pre-installed on the pipelines VMs.

Author: josesimoes

azure-pipelines.yml

@@ -96,14 +96,6 @@ jobs:
 
   - template: azure-pipelines-templates/install-nuget.yml@templates
 
-  - task: DotNetCoreCLI@2  
-    condition: ne(variables['system.pullrequest.isfork'], true)
-    displayName: Install NBGV tool
-    inputs:
-      command: custom
-      custom: tool
-      arguments: install -g nbgv
-
   - task: InstallnFBuildComponents@1
     condition: ne( variables['StartReleaseCandidate'], true )
     displayName: Install nanoFramework MSBuild components