radicale removal

src/freedombone-app-radicale

     remove_completion_param install_radicale
     sed -i '/radicale/d' $COMPLETION_FILE
     sed -i '/Radicale/d' /home/$MY_USERNAME/README
-    sed -i '@location /radicale@,@}@d' /etc/nginx/sites-available/${DEFAULT_DOMAIN_NAME}
+    sed -i '/location \/radicale/,/}/d' /etc/nginx/sites-available/${DEFAULT_DOMAIN_NAME}
     systemctl restart nginx
 }