Cleanup codecov sample comment (#1623)

Author: manodasanW

azure-pipelines/BuildStageVariables.yml

@@ -2,4 +2,4 @@ variables:
   DOTNET_SKIP_FIRST_TIME_EXPERIENCE: true
   BuildConfiguration: Release
   NUGET_PACKAGES: $(Agent.TempDirectory)/.nuget/packages/
-  # codecov_token: 4dc9e7e2-6b01-4932-a180-847b52b43d35 # Get a new one from https://codecov.io/
+  # For codecov, get a token from https://codecov.io/ and set it as codecov_token