LG-7521 Remove Double Rule

[gina-yamada]

🎫 Ticket

LG-7521 Adjust component to avoid appearance of a double rule

🛠 Summary of changes

Remove double line below Post Office search results (/verify/document_capture#location on Find a participating Post Office)

📜 Testing Plan

1. Create an account
2. Attempt to verify your identity via /verify
3. Upload front/back of ID to fail identity verification
4. Click Try in person and Continue to get to Find a participating Post Office (via /verify/document_capture#location)
5. Enter text in the input field and click Search
6. Scroll to the bottom of the page. You should not see a double line below the search results
7. Poke through app, nothing else should be effected.

👀 Screenshots

Before:

After:

[aduth]

Non-blocking comment about Sass syntax to consider, but LGTM otherwise 👍

[JackRyan1989]

LGTM!

[kellular]

LGTM, thank you Gina!