Questione giuridica chiave
Whether the appeal should be struck off following the withdrawal.
Decisione estratta
The proceedings were discontinued because the appeal had been withdrawn.
Motivazione estratta
Under Art. 71 BGG in conjunction with Art. 73 para. 1 BZP, the case is to be discontinued in the procedure under Art. 32 para. 2 BGG once the appeal is withdrawn.