remove unused view_base.py

Change-Id: I3cf4999a86145b3c3c450d269f98fa57030a3591
Reviewed-on: http://review.couchbase.org/30258
Reviewed-by: Andrei Baranouski <andrei.baranouski@gmail.com>
Tested-by: Andrei Baranouski <andrei.baranouski@gmail.com>