MB-100: killed unused massagedUsedPoolDetails

Change-Id: I2a6d883bd4e1bcad759271402c6e20ca32604101
Reviewed-on: http://review.couchbase.org/27762
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Reviewed-by: Pavel Blagodov <stochmail@gmail.com>
MB-100: removed viewOps from basicStats which was never used

Change-Id: I56573521f292e50dbb17a24bfdcc93261e5b27fd
Reviewed-on: http://review.couchbase.org/27763
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Reviewed-by: Pavel Blagodov <stochmail@gmail.com>