Remove not used anymore parameters in ini config

These are not used anymore for a long time. They're just
cluttering the ini file and wasting memory in couch_config.

Change-Id: I33abfc9686e48d6d723a66ceddb2520b0e5d94ba
Reviewed-on: http://review.couchbase.org/26198
Tested-by: Filipe David Borba Manana <fdmanana@gmail.com>
Reviewed-by: Volker Mische <volker.mische@gmail.com>