Remove hug bot

[mgwalker]

Removes hug bot. It's a cute idea but the pictures of huggers are from many years in 18F's past with only one or two people still at TTS in the dataset. As a result, it can be kinda weird. And we don't really have a great way of adding new pictures, nor really much interest in doing it. So... let's retire this bot to a server farm upstate.

I am in the process of disconnecting and shutting down the cloud.gov s3 service that hosted those images, but this PR need not wait for that cleanup to happen.

---

Checklist:

• Code has been formatted with prettier

N/A:

• The OAuth wiki
  page has been updated if Charlie needs any new OAuth events or scopes
• The Environment Variables
  wiki page has been updated if new environment variables were introduced
  or existing ones changed
• The dev wiki has been updated, e.g.:
  • local development processes have changed
  • major development workflows have changed
  • internal utilities or APIs have changed
  • testing or deployment processes have changed
• If appropriate, the NIST 800-218 documentation has been updated