remove usage counter on uninstall as we currently don't use it and the Firefox reviewer mentioned that it needs to be documented both in the privacy policy and the add-on description
remove usage counter on uninstall as we currently don't use it and the Firefox reviewer mentioned that it needs to be documented both in the privacy policy and the add-on description

languagetool-org/languagetool-browser-addon,languagetool-org/languagetool-browser-addon,languagetool-org/languagetool-browser-addon,languagetool-org/languagetool-browser-addon