Allow the retirement date to be cleared (transferred from ManageIQ/manageiq@22b29ef57003ea77b03b2ceaed7d8ff723c71fdf)
Allow the retirement date to be cleared
(transferred from ManageIQ/manageiq@22b29ef57003ea77b03b2ceaed7d8ff723c71fdf)

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