Revert "CBQE-2403:: Implement and add Checks for Bad Replicas in Rebalance and Failover tests"

This reverts commit 7c87cc3ae70b828416be60e485a307670d3d57e0.

Change-Id: I02e114ce44ec6690200d48a3b4e95a231811af70
Reviewed-on: http://review.couchbase.org/41200
Reviewed-by: Parag Agarwal <agarwal.parag@gmail.com>
Tested-by: Parag Agarwal <agarwal.parag@gmail.com>