commitlog: remove unused argument during segment creation
commitlog: remove unused argument during segment creation

Since 99a5a7723433e8a43b259ed09d45f0a77410ae1c all segments are created
equal and "active" argument is never true, so drop it.

Message-Id: <75e49e6b4da3c9a936af36423a1778503c20fc11@scylladb.com>

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