[ci skip] Remove validate job for GitHub Actions

https://github.blog/changelog/2021-02-08-github-actions-skip-pull-request-and-push-workflows-with-skip-ci/

Author: yhatt

.github/workflows/test-win.yml

@@ -8,15 +8,8 @@ env:
   YARN_VERSION: '^1.22.5'
 
 jobs:
-  validate:
-    runs-on: ubuntu-latest
-    if: ${{ github.ref == 'refs/heads/main' || !startsWith(github.event.head_commit.message, '[ci skip]') }}
-    steps:
-      - run: echo "${{ github.event.head_commit.message }}"
-
   win-test:
     runs-on: windows-latest
-    needs: validate
 
     strategy:
       fail-fast: false