ITVR - Automation: CRA file to be deleted after script run to upload data into console

**Description:**
To avoid any privacy or security breaches of the file or data being received form the CRA we want to delete the file as soon as it is uploaded in the ITVR console.

**Acceptance Criteria:**
Given I am a government user,
When the CRA data file is automatically received back form CRA and uploaded into the console,
Then, I want the file to be automatically deleted.

**Development Checklist:**
- [ ] The file gets deleted from wherever it's stored after it has been successfully processed by the backend service.

**Notes:**

# Dependencies

## Blocked By

- [ ] bcgov/itvr/issues/566

Start by tracing the backend service that receives and uploads the CRA data file, then identify where the file remains stored after successful processing. Confirm the dependency on bcgov/itvr#566 before starting. Done means the file is automatically deleted from its storage location only after the upload and backend processing succeed.

Written by the indexing model from the issue text.