Remove GitHub Action to build Jekyll (#19507)

.github/workflows/test.yml

@@ -49,39 +49,3 @@ jobs:
           CI: true
       - name: Run textlint
         run: npm run textlint
-  build:
-    name: Jekyll build
-    runs-on: ubuntu-18.04
-    needs: [markdown-lint]
-    steps:
-      - name: Check out files from GitHub
-        uses: actions/checkout@v2.3.4
-      - name: Setting up Ruby 2.7
-        uses: ruby/setup-ruby@v1.82.0
-        with:
-          ruby-version: 2.7
-      - name: Setup Ruby Gems cache
-        uses: actions/cache@v2.1.6
-        with:
-          path: vendor/bundle
-          key: gems-${{ hashFiles('**/Gemfile.lock') }}
-          restore-keys: |
-            gems-
-      - name: Installing dependencies
-        run: |
-          gem install bundler -v 2.2.28
-          bundle config path vendor/bundle
-          bundle install --jobs 4 --retry 3
-      - name: Setting up Jekyll cache
-        uses: actions/cache@v2.1.6
-        with:
-          path: source/.jekyll-cache
-          key:
-            jekyll-${{ hashFiles('**/Gemfile.lock') }}-${{
-            hashFiles('**/_config.yml') }}
-          restore-keys: |
-            jekyll-${{ hashFiles('**/Gemfile.lock') }}-
-            jekyll-
-      - name: Building site
-        run: |
-          bundle exec rake generate