configure.ac: remove versioning stuff we don't need
configure.ac: remove versioning stuff we don't need

https://bugzilla.gnome.org/show_bug.cgi?id=699492

Distrotech/telepathy-account-widgets,GNOME/telepathy-account-widgets,Distrotech/telepathy-account-widgets,GNOME/telepathy-account-widgets,GNOME/telepathy-account-widgets