CBQE-1362: clean up-addnodes tests are not used anymore

Change-Id: Ie18c33d521774a72a2d8a235dcfa3bdfadfc1b8b
Reviewed-on: http://review.couchbase.org/27109
Tested-by: buildbot <build@couchbase.com>
Reviewed-by: Deepkaran Salooja <deepkaran.salooja@globallogic.com>