MB-9333: Remove stats vbucket from memcached bucket
MB-9333: Remove stats vbucket from memcached bucket

This just ends up returning 65k lines of invalid state and it
clutters the cbcollectinfo logs. Plus we don't support vbuckets
in the memcached bucket.

Change-Id: I44a584788a8e3e41a583840b29a929013509dcbf
Reviewed-on: http://review.couchbase.org/33781
Reviewed-by: Trond Norbye <60edd2ef23891a753f231b0c6f161dc634079a93@gmail.com>
Tested-by: Trond Norbye <60edd2ef23891a753f231b0c6f161dc634079a93@gmail.com>

owendCB/memcached,daverigby/memcached,owendCB/memcached,cloudrain21/memcached-1,jimwwalker/memcached,couchbase/memcached,owendCB/memcached,daverigby/kv_engine,daverigby/memcached,mrkwse/memcached,cloudrain21/memcached-1,cloudrain21/memcached-1,mrkwse/memcached,daverigby/kv_engine,daverigby/kv_engine,daverigby/memcached,cloudrain21/memcached-1,couchbase/memcached,mrkwse/memcached,daverigby/memcached,mrkwse/memcached,jimwwalker/memcached,owendCB/memcached,daverigby/kv_engine,couchbase/memcached,couchbase/memcached,jimwwalker/memcached