This reverts commit 62910f0cab525ca4d4901c4c27f6e6b22c3375fc.
This reverts commit 75a8197879ec47094d9b18f3dab7bcc1c1cdba28.
We don't find `kombu.serialization.pickle_load` since we respect
`__all__`. I think that was an attempt to not flood the captured
modeling with useless re-exports, but I think we've ended up doing that
anyway... we should consider to remove that restriction!
see 21d7df29c7/kombu/serialization.py (L29)