Case T-715/18: Order of the General Court of 20 May 2019 — Phreneos and Others v Commission (Public supply contracts — Tender procedure — Planning, preparation, promotion and implementation of the event ‘European Development Days’ — Rejection of a tenderer’s bid and award of the contract to another tenderer — Annulment of the procurement procedure — Action which has become devoid of purpose — No need to adjudicate)