Case T-321/17: Order of the General Court of 20 December 2021 — Niemelä and Others v ECB (Action for annulment — Economic and monetary policy — Prudential supervision of credit institutions — Specific supervisory tasks assigned to the ECB — Decision to withdraw a credit institution’s authorisation — Replacement of the contested measure in the course of the proceedings — Action which has become devoid of purpose — Loss of interest in bringing proceedings — No need to adjudicate — Action for damages — Manifest inadmissibility)