Remove a part of comment that no longer applies.

Change-Id: Ib117f6def0c7d6f74d8681ac0a25f47ceb93f7fd
Reviewed-on: http://review.couchbase.org/35297
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>