The DST code has not yet been fully tested, the upcoming movement
refactor is upon us and it will integrate with the micro timezone
library anyway. Revert it so that next can be merged into main.
This reverts commit 0cc28b9811e76de3dc2cc2919d5309cfa48edfeb, reversing
changes made to 337864eb543c9b5cd83667ab0eafb476f63af54c.
683032219e