file is a directory, it will only be deleted if it
is empty.gFileDelete(object, cancellable = NULL, .errwarn = TRUE)GFile.GCancellable object, NULL to ignore.TRUE if the file was deleted. FALSE otherwise.GError, or NULLcancellable is not NULL, then the operation can be cancelled by
triggering the cancellable object from another thread. If the operation
was cancelled, the error G_IO_ERROR_CANCELLED will be returned.