derequisition
verb[T]
uk/ˌdiːrekwɪˈzɪʃən/toreturnsomething that had beenrequisitioned(=officiallyrequestedand taken for use)but that is nolongerneeded:
Thisairfieldwas derequisitioned 18monthsago, since when the County Agricultural Executive Committee have beenrestoringthelandforfarming.