test.py: remove an unused option
test.py: remove an unused option

Message-Id: <e441f87118a5e5f4f990d095c653d77a329abf9c@scylladb.com>

scylladb/scylla,scylladb/scylla,avikivity/scylla,avikivity/scylla,scylladb/scylla,avikivity/scylla,scylladb/scylla