Remove shutdown check

We only needed this because we didn't want to notify mccouch.

Change-Id: I63ad9cddbe86930facfd68ceaa3ee87998ba025d
Reviewed-on: http://review.couchbase.org/40958
Reviewed-by: Sundararaman Sridharan <sundar@couchbase.com>
Tested-by: Michael Wiederhold <mike@couchbase.com>