Get error message after running topoflow4 data transformation on fresh checkout

Steps to Reproduce
- fresh checkout
- docker run --rm -v $(pwd):/ws -v /tmp:/tmp  mintproject/mint_dt ./examples/topoflow4/topoflow_climate_new.yml
- Error:  File "/ws/funcs/topoflow/topoflow_climate.py", line 69, in __init__    assert not os.path.exists(output_file), AssertionError

Steps to Resolve
- Remove examples/topoflow4/dev directory from commit

