CBQE-1378 delete extra line for conf file

Change-Id: Id9ebc04de5af301e83a69893d9e779018bae50a6
Reviewed-on: http://review.couchbase.org/27752
Reviewed-by: Chisheng Hong <chisheng@couchbase.com>
Tested-by: Chisheng Hong <chisheng@couchbase.com>