MB-100 remove not use couchbase single un/install code from remote_util file

Change-Id: Idb7ba2b92655cc37bedc452e8d572acc298604f1
Reviewed-on: http://review.couchbase.org/27003
Reviewed-by: Chisheng Hong <chisheng@couchbase.com>
Reviewed-by: Thuan Nguyen <soccon@gmail.com>
Tested-by: Thuan Nguyen <soccon@gmail.com>