Wrong message when resetting to default log level

It seems I may have misunderstood how the default log level works in #72. I recently noticed

    Restoring buffer logging value to default (0)

even though it gets reset to 9. I suggest just removing the `(x)` part. Alternatively, we could use `context.is_logged()` for "on/off" feedback, but that would probably always be "on", otherwise we would not be resetting the log level in the first place.