Revert "Adds ResilientSender class and Conductor driver"

This reverts commit 6ef3249aa805fe16b726b1f21c90e054e9f95f66.
One of the functional tests does not compile due to this commit
which is affecting CI.
Merge pull request #9 from TimSimpsonR/revert-c

Revert "Adds ResilientSender class and Conductor driver"