Revert "🧪 Log base_ref @ GHA runs for PRs"

This reverts commit bdf1016.

Author: webknjaz

.github/workflows/reusable-smoke-test.yml

@@ -33,10 +33,6 @@ jobs:
     timeout-minutes: 1
 
     steps:
-    - name: Fail on PRs against illegal branches
-      if: github.event_name == 'pull_request'
-      run: echo github.base_ref='"${{ github.base_ref }}"'
-
     - name: Fail on PRs against illegal branches
       if: >-
         github.event_name == 'pull_request' &&