We don't need a separate listener class for txn size
We don't need a separate listener class for txn size

Change-Id: I667b90d129cc1e5ac86674c94a0021dff14b52d2
Reviewed-on: http://review.couchbase.org/7111
Reviewed-by: Dustin Sallings <1c08efb9b3965701be9d700d9a6f481f1ffec3ea@spy.net>
Tested-by: Dustin Sallings <1c08efb9b3965701be9d700d9a6f481f1ffec3ea@spy.net>

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