Remove copilot-setup-steps env var (#2124)

Author: jakebailey

.github/workflows/copilot-setup-steps.yml

@@ -13,9 +13,6 @@ jobs:
       # If you want to clone the repository as part of your setup steps, for example to install dependencies, you'll need the `contents: read` permission. If you don't clone the repository in your setup steps, Copilot will do this for you automatically after the steps complete.
       contents: read
 
-    env:
-      MS_GOTOOLCHAIN_TELEMETRY_ENABLED: '0'
-
     # You can define any steps you want, and they will run before the agent starts.
     # If you do not check out your code, Copilot will do this for you.
     steps: