Deleting a nonexisting item in a tap stream isn't an error
Deleting a nonexisting item in a tap stream isn't an error

Change-Id: Ie0f3923e03255981b723d30acc5b967612bc8e23
Reviewed-on: http://review.membase.org/3737
Reviewed-by: Matt Ingenthron <1fa2ef4755a9226cb9a0a4840bd89b158ac71391@northscale.com>
Tested-by: Matt Ingenthron <1fa2ef4755a9226cb9a0a4840bd89b158ac71391@northscale.com>

hisundar/ep-engine,couchbase/ep-engine,owendCB/ep-engine,hisundar/ep-engine,sriganes/ep-engine,couchbaselabs/ep-engine,daverigby/kv_engine,jimwwalker/ep-engine,teligent-ru/ep-engine,daverigby/kv_engine,couchbase/ep-engine,hisundar/ep-engine,jimwwalker/ep-engine,membase/ep-engine,couchbaselabs/ep-engine,daverigby/ep-engine,abhinavdangeti/ep-engine,couchbase/ep-engine,sriganes/ep-engine,owendCB/ep-engine,couchbase/ep-engine,membase/ep-engine,hisundar/ep-engine,zbase/ep-engine,sriganes/ep-engine,sriganes/ep-engine,teligent-ru/ep-engine,daverigby/ep-engine,jimwwalker/ep-engine,couchbaselabs/ep-engine,daverigby/ep-engine,membase/ep-engine,zbase/ep-engine,teligent-ru/ep-engine,owendCB/ep-engine,couchbaselabs/ep-engine,abhinavdangeti/ep-engine,jimwwalker/ep-engine,couchbaselabs/ep-engine,owendCB/ep-engine,abhinavdangeti/ep-engine,membase/ep-engine,zbase/ep-engine,daverigby/kv_engine,zbase/ep-engine,abhinavdangeti/ep-engine,daverigby/ep-engine,zbase/ep-engine,abhinavdangeti/ep-engine,teligent-ru/ep-engine,daverigby/kv_engine