Remove docs/ from develop branch (#1189)

This PR removes the entire `docs/` directory from the develop branch, as indicated by the title "Remove docs/ from develop branch". The changes completely delete all documentation files, JSDoc templates, build configurations, and documentation-related assets.

- Complete removal of all documentation files including FAQ, building guide, contributing guide, and efficiency guide
- Removal of JSDoc template files and configuration for documentation generation
- Deletion of generated documentation assets including CSS, JavaScript, and HTML templates

Fix: #1187

Author: minggangw