Since we are switching the documentation to build using Jekyll and the logic is in the cometbft-docs repository, it's better to remove all the logic to build the documentation using vuepress. For that we need to:

• Remove the .vuepress folder
• Update the content of /docs/DOCS_README.md to point to cometbft-docs repo for instructions on how to build the documentation locally
• Remove the build-docs from the Makefile
• Remove:
  docs/package.json
  docs/package-lock.json
  docs/post.sh
  docs/pre.sh
  docs/presubmit.sh
  docs/stop-words.txt
  docs/versions