cbcollect_info: stats klog are no longer relevant

from stats.log :

==============================================================================
memcached stats klog
['cbstats', '-a', '127.0.0.1:11210', 'klog', '-b', '_admin', '-p', '6bb2984fe2e2bd0d7cc483a20d86654c']
==============================================================================
Usage: cbstats host:port all
or cbstats host:port allocator
or cbstats host:port checkpoint [vbid]
or cbstats host:port config
or cbstats host:port dcp
or cbstats host:port dcp-takeover vb name
or cbstats host:port dcpagg
or cbstats host:port diskinfo [detail]
or cbstats host:port dispatcher [logs]
or cbstats host:port failovers [vbid]
or cbstats host:port hash [detail]
or cbstats host:port items (memcached bucket only)
or cbstats host:port key keyname vbid
or cbstats host:port kvstore
or cbstats host:port kvtimings
or cbstats host:port memory
or cbstats host:port prev-vbucket
or cbstats host:port raw argument
or cbstats host:port reset
or cbstats host:port slabs (memcached bucket only)
or cbstats host:port tap
or cbstats host:port tap-takeover vb name
or cbstats host:port tapagg
or cbstats host:port timings
or cbstats host:port upr
or cbstats host:port upr-takeover vb name
or cbstats host:port upragg
or cbstats host:port uuid
or cbstats host:port vbucket
or cbstats host:port vbucket-details [vbid]
or cbstats host:port vbucket-seqno [vbid]
or cbstats host:port vkey keyname vbid
or cbstats host:port warmup

usage: cbstats [options]

options:
-h, --help show this help message and exit
-a iterate over all buckets (requires admin u/p)
-b BUCKETNAME the bucket to get stats from (Default: default)
-p PASSWORD the password for the bucket if one exists