Recently, unrelated changes led to enabling logging for flask-limiter
accidentally, at which point it was discovered that it wasn't actually
limiting requests due to Limiter.key_func = get_CF not being proper
for either prod (not behind Cloudflare) or localhost (likewise).
We instead use the remote_addr attached directly to the request using
the existing flask-limiter function to do so.
Detailed troubleshooting at:
https://github.com/themotte/rDrama/issues/222#issuecomment-1229489062