Revert "MB-8322: Use couch_set_view for index deletion"

This reverts commit e5c59f13484f2ed1b51a98b1844bf5211e6992e2.

Change-Id: Iff9df71fe0b91c21842312f2bb0c0658a1a0a23e
Reviewed-on: http://review.couchbase.org/29512
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>