Revert "CBQE-2075: added support for XDCR pause and resume for tests"

This reverts commit 044ef8796fa075e8590cae6ec6213996b2d686f0.

Change-Id: Ie1620adcd7faa6e9b659099754e8faa63e963cb1
Reviewed-on: http://review.couchbase.org/33915
Reviewed-by: Aruna Piravi <aruna@couchbase.com>
Tested-by: Aruna Piravi <aruna@couchbase.com>