Revert "Work around CAF bug involving detached actors"
Revert "Work around CAF bug involving detached actors"

This reverts commit 7e9730350f559345b1e9255689aa61acc63e1b78, because
the underlying bug has been fixed in CAF in the meantime.

vast-io/vast,vast-io/vast,vast-io/vast,vast-io/vast,mavam/vast,vast-io/vast,mavam/vast,mavam/vast,mavam/vast