Revert "Issue #3112295 by mpdonadio, Hardik_Patel_12, daffie, JeroenT, Vlad Bo, pifagor, voleger, alexpott: Replace REQUEST_TIME in OO code w/o access to the container"

This reverts commit d23b4cc8.

Issue #3112295 by mpdonadio, Hardik_Patel_12, daffie, JeroenT, Vlad Bo, pifagor, voleger, alexpott: Replace REQUEST_TIME in OO code w/o access to the container

Issue #2940189 by Vlad Bo, claudiu.cristea, alexpott, NightHunterSV, andypost, almaudoh, voleger, Berdir: Deprecate system_get_info()