Remove the comment-out code. (#1691)

Co-authored-by: Jason Song <i@wolfogre.com>

pkg/runner/testdata/issue-228/main.yaml

@@ -1,14 +0,0 @@
-name: issue-228
-
-on:
-  - push
-
-jobs:
-  kind:
-    runs-on: ubuntu-latest
-    steps:
-      - run: apt-get update -y && apt-get install git -y # setup git credentials will fail otherwise
-      - name: Setup git credentials
-        uses: fusion-engineering/setup-git-credentials@v2
-        with:
-          credentials: https://test@github.com/