ir.needaction_mixin is not used anymore by the webclient. From 9.0, the concept has changed: this feature is now available in mail module, with the mail.thread mixin, and message_neeadction field. Remove all code handeling needaction bullet and counter on ir.ui.menu, knowing that since 9.0 webclient does not display the counter anymore. This code was, thus, useless and some RPC calls were done for nothing, and adapt accounting reconcialiation widget.