Create one producer as required in test_dcp_takeover
Create one producer as required in test_dcp_takeover

Removing code that creates an unnecessary DCP producer
in this test.

Change-Id: I6b5c9861b3ff97f03c71771a426ea11697380dfa
Reviewed-on: http://review.couchbase.org/57480
Tested-by: buildbot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>
Reviewed-by: Chiyoung Seo <fcffc23db27b19ee4ebba46695ee6b50e09216a2@couchbase.com>

teligent-ru/ep-engine,teligent-ru/ep-engine,daverigby/ep-engine,hisundar/ep-engine,owendCB/ep-engine,daverigby/kv_engine,teligent-ru/ep-engine,couchbase/ep-engine,daverigby/ep-engine,teligent-ru/ep-engine,daverigby/ep-engine,owendCB/ep-engine,daverigby/kv_engine,membase/ep-engine,daverigby/ep-engine,couchbase/ep-engine,membase/ep-engine,membase/ep-engine,daverigby/kv_engine,hisundar/ep-engine,daverigby/kv_engine,owendCB/ep-engine,owendCB/ep-engine,couchbase/ep-engine,hisundar/ep-engine,hisundar/ep-engine,couchbase/ep-engine,membase/ep-engine