Revert "GKeyFile – Add array length annotations to to_data(), get_keys() and get_groups()"
Revert "GKeyFile – Add array length annotations to to_data(), get_keys() and get_groups()"

This reverts commit fd329f4853f180eb92746f39fc96fd5d91394009.

The commit changed the Introspection ABI, and it requires a change in
any application using an introspection-based language binding.

endlessm/glib,johne53/MB3Glib,johne53/MB3Glib,endlessm/glib,johne53/MB3Glib,endlessm/glib,johne53/MB3Glib,johne53/MB3Glib,johne53/MB3Glib,endlessm/glib,endlessm/glib