With WP Caregiver plugin you can easily turn on-off some basic theme and core services of WordPress. Simply install and activate then plugin. After activation visit your admin area Dashboard -> Settings -> WP Caregiver and tick the features which you like to remove.
Frontend features you can remove:
- Remove generator meta tag
- Remove RSD (Really Simple Discovery ) link
- Remove Windows Live Writer link
- Remove post relational links (prev, next)
- Remove canonical link
- Remove RSS feed links
- Remove admin bar
- Remove the Website URL field from the comment form
- Quick maintenance
- Force login
Backend features you can remove:
- Disable core (WordPress) update notification
- Disable plugins update notification
- Disable themes update notification
- Hide login error messages
- Enable “All Settings” item in Settings menu
- Enable Link Manager feature
- Enable Featured image support
- Enable excerpt field for pages
- Enable TinyMCE Editor for excerpt
- Display IDs in post/page list
- Customize WP Mail
- Remove WordPress version from footer