This wasn't entirely thought through... Revert "Unreachable needs to be an instance of/inherit from AvalaraServerException"
This wasn't entirely thought through... Revert "Unreachable needs to be an instance of/inherit from AvalaraServerException"

This reverts commit 28e971c28e6d038b9aa011bdfbace22f66707e04.

lionheart/pyavatax