identity: Remove unused variables
identity: Remove unused variables

Fallout from f4c3d303bf7ecc9e0cc6288d787c118365c1d34a

Fixes: https://bugzilla.gnome.org/686416

ritzk/gnome-online-accounts,halfline/gnome-online-accounts,felipeborges/gnome-online-accounts,dnohales/gnome-online-accounts,felipeborges/gnome-online-accounts,dnohales/gnome-online-accounts,ritzk/gnome-online-accounts,ritzk/gnome-online-accounts,dnohales/gnome-online-accounts,halfline/gnome-online-accounts,Distrotech/gnome-online-accounts,halfline/gnome-online-accounts,Distrotech/gnome-online-accounts,felipeborges/gnome-online-accounts,Distrotech/gnome-online-accounts