Uninstalling plugins across all sites

For a little bit more overview the plugin WordPress-Multisite-Enhancements might help. This adds a column to view the activation in each site of the network. A screenshot will demonstrate the result.
Screenshot of WordPress-Multisite-Enhancements with added column

Many plugins uninstall their data inside the database only if you delete the plugin on the UI of the back end. Only removing the folder deletes the plugin, but often not the database entries.