Remove deprecated functions from the config module (#11935)
* Remove compatibility wrappers around `hasUiAccess` and `execElevated` introduced in #10493 from the config module
* Remove deprecated `getConfigDirs` from the config module
* Add missing imports from `typing` to the config module
* Remove deprecated `canStartOnSecureScreens` from the config module
* Update what's new
Co-authored-by: Michael Curran <mick@nvaccess.org>
