Remove Pandoc

Pandoc failed with The font "Noto Sans JP" cannot be found.
I think we can retire this for sbt 1.x docs now.

Author: eed3si9n

.github/workflows/ci.yml

@@ -29,30 +29,6 @@ jobs:
       run: |
         sbt -v scalafmtSbtCheck scalafmtCheckAll scripted makeSite
 
-    - name: Pandoc English
-      if: ${{ github.event_name == 'push' && github.repository == 'sbt/website' && github.ref == 'refs/heads/1.x' }}
-      uses: eed3si9n/pandoc@master
-      with:
-        args: '--pdf-engine=xelatex --toc -s -o target/pamflet/sbt-reference.pdf target/pamflet/Combined+Pages+Pdf.md'
-
-    - name: Pandoc Japanese
-      if: ${{ github.event_name == 'push' && github.repository == 'sbt/website' && github.ref == 'refs/heads/1.x' }}
-      uses: eed3si9n/pandoc@master
-      with:
-        args: '--pdf-engine=xelatex -V CJKmainfont="Noto Sans JP" --toc -s -o target/pamflet/ja/sbt-reference.pdf target/pamflet/ja/Combined+Pages+Pdf.md'
-
-    - name: Pandoc Chinese
-      if: ${{ github.event_name == 'push' && github.repository == 'sbt/website' && github.ref == 'refs/heads/1.x' }}
-      uses: eed3si9n/pandoc@master
-      with:
-        args: '--pdf-engine=xelatex -V CJKmainfont="Noto Sans SC" --toc -s -o target/pamflet/zh-cn/sbt-reference.pdf target/pamflet/zh-cn/Combined+Pages+Pdf.md'
-
-    - name: Pandoc Spanish
-      if: ${{ github.event_name == 'push' && github.repository == 'sbt/website' && github.ref == 'refs/heads/1.x' }}
-      uses: eed3si9n/pandoc@master
-      with:
-        args: '--pdf-engine=xelatex --toc -s -o target/pamflet/es/sbt-reference.pdf target/pamflet/es/Combined+Pages+Pdf.md'
-
     # https://docs.github.com/en/free-pro-team@latest/actions/reference/encrypted-secrets
     - name: Deploy to GH Pages
       if: ${{ github.event_name == 'push' && github.repository == 'sbt/website' && (github.ref == 'refs/heads/develop' || github.ref == 'refs/heads/1.x' || github.ref == 'refs/heads/1.x-beta') }}