Re-enable delete_from_postgis when cleaning up after a failed upload

[ingenieroariel]

The code in question is:

    try:
        cat.add_data_to_store(ds, name, data,
                              overwrite=overwrite,
                              charset=charset)
        return ds, cat.get_resource(name, store=ds)
    except Exception:
        # FIXME(Ariel): This is not a good idea, today there was a problem 
        # accessing postgis that caused add_data_to_store to fail,
        # for the same reasons the call to delete_from_postgis below failed too
        # I am commenting it out and filing it as an issue
        #delete_from_postgis(name)
        raise

[ingenieroariel]

Options to fix it are for example adding specific types to Exception, in which cases delete_from_postgis is not expected to fail or adding an inner try/except block (most likely not a good idea according to the Zen of Python: Flat is better than nested")

[ingenieroariel]

I am punting this one for 2.1

[capooti]

What about re-adding it and see how things go?