Remove sensitive Elavon data from Pipeline

[evansiroky]

User story / feature request

In order to comply with Caltrans security parameters, we should remove all sensitive Elavon data from our data pipeline.

1. We need to remove data we have already collected from raw data and any BigQuery tables that ingested the data.
2. We need to modify the DAG task that ingests Elavon Data so that it does store any sensitive data in our cloud system.

Acceptance Criteria

The sensitive data that needs to be removed includes:

1. account_number
2. routing_number
3. customer_name
4. card_no