MB-12251: Remove failover test

The failover test for the spatial views should be rewritten with
the new testrunner API. Hence I'm removing the old one.

Change-Id: I35183200684196760a37911afba5d23800726e88
Reviewed-on: http://review.couchbase.org/43851
Tested-by: buildbot <build@couchbase.com>
Reviewed-by: Ketaki Gangal <ketakigangal@gmail.com>