Simplify set_user_time_zone. (transferred from ManageIQ/manageiq@690ae0145cc4b91a7448fe9abdc08a5d79df2674)
Simplify set_user_time_zone.
(transferred from ManageIQ/manageiq@690ae0145cc4b91a7448fe9abdc08a5d79df2674)

ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic