Remove "unused" stat command "connections"
Remove "unused" stat command "connections"

The information don't make much sense for the average user

Change-Id: I9176640af30a2ae2d1931d0790ffea0e1a5b3c6c
Reviewed-on: http://review.couchbase.org/38737
Tested-by: Trond Norbye <60edd2ef23891a753f231b0c6f161dc634079a93@gmail.com>
Reviewed-by: Dave Rigby <a09264da4832c7ff1d3bf1608a19f4b870f93750@couchbase.com>

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