Remove not needed anymore code from compactor

Since applying the log files to the btrees is done via an external
process and spatial views have no reduce functions, this isn't needed
anymore.

Change-Id: If137a56a51c3adfc1fc973897038a1694b1f48da
Reviewed-on: http://review.couchbase.org/33990
Reviewed-by: Sarath Lakshman <sarath@couchbase.com>
Tested-by: buildbot <build@couchbase.com>
Reviewed-by: Volker Mische <volker.mische@gmail.com>
Tested-by: Filipe David Borba Manana <fdmanana@gmail.com>