chore(api): remove now obsolete handling of legacy auth action codes
chore(api): remove now obsolete handling of legacy auth action codes

introduced by 1e3c3c873aafb49912b63057da2027a6c3455b6a (#511)

desec-io/desec-stack,desec-io/desec-stack,desec-io/desec-stack,desec-io/desec-stack