References: https://github.com/owncloud/core/pull/41451 (chore: drop experimental feature in core/Command/Db/ConvertType.php) * Remove section: [Converting Database Type](https://doc.owncloud.com/server/next/admin_manual/configuration/database/db_conversion.html) * Remove occ command: [Database Conversion Commands](https://doc.owncloud.com/server/next/admin_manual/configuration/server/occ_command.html#database-conversion-commands)