Update group-contacts.csv

Author: hattrill

metadata/group-contacts.csv

@@ -36,7 +36,6 @@ Ensembl,,,Curation,,
 Eurofung,,,Curation,P2GO,
 FlyBase,,,,,
 ° FlyBase,@hattrill,Helen Attrill @hattrill,Curation,P2GO | Noctua,
-° FlyBase,@gantonazzo,Giulia Antonazzo @gantonazzo,Curation,P2GO | Noctua,
 ° FlyBase,,Steven Marygold @sjm41,Curation & Ontology development,P2GO | Noctua,
 ° FlyBase,,Rossana Zaru @rozaru,Curation,P2GO | Noctua,
 GDB,@Antonialock @pgaudet @vanaukenk,Not actively maintainted/GO_Central,Curation (inactive),P2GO,