MB-10057: don't keep checkpoint status error message
MB-10057: don't keep checkpoint status error message

Because it's not used anywhere

Change-Id: I840885e3e2152d05fdf23adef5c7ecc85a936024
Reviewed-on: http://review.couchbase.org/34032
Reviewed-by: Aliaksey Artamonau <3c875bcfb3adf2a65b2ae7686ca921e6c9433147@gmail.com>
Tested-by: Aliaksey Kandratsenka <340b8e09ca65cd3fc686427fcfed17e87eaf61e2@gmail.com>

mschoch/ns_server,ceejatec/ns_server,ceejatec/ns_server,membase/ns_server,mschoch/ns_server,t3rm1n4l/ns_server,membase/ns_server,mschoch/ns_server,daverigby/ns_server,nimishzynga/ns_server,t3rm1n4l/ns_server,membase/ns_server,membase/ns_server,ceejatec/ns_server,t3rm1n4l/ns_server,membase/ns_server,daverigby/ns_server,membase/ns_server,nimishzynga/ns_server,nimishzynga/ns_server,t3rm1n4l/ns_server,mschoch/ns_server,nimishzynga/ns_server,daverigby/ns_server,nimishzynga/ns_server,ceejatec/ns_server,ceejatec/ns_server,t3rm1n4l/ns_server,ceejatec/ns_server,mschoch/ns_server,mschoch/ns_server,daverigby/ns_server,nimishzynga/ns_server,daverigby/ns_server