Renamed delete to remove and removed alias due to it being a reserved word.

Change-Id: Ib7f9cdd893bb6af3910f56869b19a459b92116dc
Reviewed-on: http://review.couchbase.org/28650
Tested-by: Brett Lawson <brett19@gmail.com>
Reviewed-by: Mark Nunberg <mnunberg@haskalah.org>