ENG-5471: Call deleteTupleFinalize() when rolling back inserts.

deleteTupleFinalize() actually takes care of notifying the table streamer
now. To remove the tuple from the contexts on insert rollback, it needs to fall
through this instead of releasing the tuple memory directly.
Merge pull request #967 from VoltDB/ENG-5471

ENG-5471: Call deleteTupleFinalize() when rolling back inserts.