Add --text_column to run_summarization_no_trainer
# What does this PR do?

Add the `--text_column` option to `run_summarization_no_trainer.py`
(mostly copy from `run_summarization.py`)

Also removed a duplicated line:
`padding = "max_length" if args.pad_to_max_length else False`

@sgugger
Hi there and thanks for the PR! It doesn't really make sense to have `text_column` without `summary_column` to go with it. Could you add this one too?<|||||>Hi @sgugger ! `summary_column` is already there, it's only `text_column` missing. 😄 