Use correct scylla_tables schema for removing version column
Use correct scylla_tables schema for removing version column

Mutations carry their schema, so use that instead of bring in a global schema,
which may change as features are added.
Message-Id: <41a473326df426c07da3cbd372acd372b883a5ba@scylladb.com>

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