8957f488dc
gnome-shell now checks for an associated drive to automatically cancel the operation on disconnect, so fake the corresponding method. While at it, drop the `get_icon()` method that hasn't been used for quite a while now. Closes: https://gitlab.gnome.org/GNOME/gnome-shell-extensions/-/issues/508 Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell-extensions/-/merge_requests/361>