CBQE-0 :: removing hanging and failure cases from conf, to be added later once we stabalize the tests

Change-Id: I0062e9b2673ea7f1eeab4843f793308be2468d87
Reviewed-on: http://review.couchbase.org/40251
Reviewed-by: Parag Agarwal <agarwal.parag@gmail.com>
Tested-by: Parag Agarwal <agarwal.parag@gmail.com>