Remove the BCC: line for the CSA emails from weekly CyHy reports and daily notifications for entities in the CSAs' regions

[jeffkause]

💡 Summary

The CISA Cyber Security Advisors (CSAs) would like to be removed from receiving the CyHy reports and daily notifications for the entities in their regions. This is a reversal of https://github.com/cisagov/cyhy-system/issues/114

Motivation and context

The CSAs no longer wish to receive CyHy reports and notifications. They will look up the information as needed.

Implementation notes

• Remove all CSA region emails for the BCC: line of the CyHy weekly reports and notifications, rolling back Issue #114.

Acceptance criteria

• [ ] CISA regional CSAs would not be receiving weekly CyHy reports for their entities.
• [ ] CISA regional CSAs would not be receiving daily or ad-hoc CyHy reports for their entities.

[dav3r]

Please have a Fed lead confirm (via a comment on this issue) that this change has been approved. Thanks!