* Add WS API for removing statistics for a list of statistic_ids
* Refactor according to code review, enable foreign keys support for sqlite
* Adjust tests
* Move clear_statistics WS API to recorder
* Adjust tests after rebase
* Update docstring
* Update homeassistant/components/recorder/websocket_api.py
Co-authored-by: Paulus Schoutsen <paulus@home-assistant.io>
* Adjust tests after rebase
Co-authored-by: Paulus Schoutsen <paulus@home-assistant.io>