bug 1254 - Removed EP_VERIFY_SHUTDOWN_FLUSH code.
bug 1254 - Removed EP_VERIFY_SHUTDOWN_FLUSH code.

This is a bit of code that verifies there are no dirty objects lying
around.  It's incorrect and is never run in any environment.  If QA
would like to bring back some functionality here, we can bring it back
and make it work.

Change-Id: I2fb2632cc0fa34244174b3bb27697ae940d795a9
Reviewed-on: http://review.northscale.com/1893
Tested-by: Trond Norbye <60edd2ef23891a753f231b0c6f161dc634079a93@gmail.com>
Reviewed-by: Trond Norbye <60edd2ef23891a753f231b0c6f161dc634079a93@gmail.com>
Tested-by: Dustin Sallings <1c08efb9b3965701be9d700d9a6f481f1ffec3ea@spy.net>

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