MB-23822: Don't use force flag when invoking delete_with_meta
MB-23822: Don't use force flag when invoking delete_with_meta

When testing concurrent delete_with_meta and delete operations,
don't use the force flag. A delete_with_meta with force flag
will forcefully persist the delete if the item metadata wasn't
found in memory. Desired behavior would be to fetch the metadata
from disk (if it exists) and then perform a CAS comparison
with the existing item

context: test_delete_with_meta_race_with_delete

Change-Id: Id7c4204fc1307020ceaf412ac2b9f31e6186e65e
Reviewed-on: http://review.couchbase.org/80164
Tested-by: Build Bot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>
Reviewed-by: Dave Rigby <a09264da4832c7ff1d3bf1608a19f4b870f93750@couchbase.com>

daverigby/kv_engine,daverigby/kv_engine,daverigby/kv_engine,daverigby/kv_engine