LG-15379 removes post office closure alerts from barcode page and email

[jennyverdeyen]

🎫 Ticket

Link to the relevant ticket:
LG-15379

🛠 Summary of changes

Updates barcode page and email to remove the temporary alerts about the January 9th post office closure.

📜 Testing Plan

Provide a checklist of steps to confirm the changes.

• Enter the application via Sinatra and perform the in-person proofing flow all the way to the barcode page.
• Inspect the barcode page and ensure this alert is not present:

• Inspect the email page and ensure this alert is not present:

[jennyverdeyen]

After discussing with @eileen-nava we decided to remove the flag while we're cleaning up the other temporary code.

[gina-yamada]

There is another line in this file that needs to be deleted

[gina-yamada]

@jennyverdeyen I did not test this yet but I think there are a few more areas to clean up just by looking at the code that went in here and here. I am unclear if we are deleting banner but keeping email or deleting all.

1. app/mailers/user_mailer.rb
2. lib/identity_config.rb
3. spec/controllers/idv/in_person/ready_to_verify_controller_spec.rb
4. I don't think we can delete all of those translations unless we delete app/mailers/user_mailer.rb and app/views/user_mailer/in_person_post_office_closed.html.erb (and more from Shane's PR)

[aduth]

Should this be a direct revert of #11707 ? I see there's some changes added there which aren't removed here yet (+145/-0 vs. +0/-134), including a few references to configuration in UserMailer.

Edit: I see @gina-yamada already mentioned most of these, sorry for missing that! (I can't delete the review comment)