Remove unused variable
Remove unused variable

Change-Id: I8a6d6fb1e91ec65c3ec3053592d102cc82de6a9f
Reviewed-on: http://review.couchbase.org/8960
Tested-by: Trond Norbye <60edd2ef23891a753f231b0c6f161dc634079a93@gmail.com>
Reviewed-by: Chiyoung Seo <8b279095f11c26cc21045fda5a3e51debb005aa9@gmail.com>

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