Remove blocking socket.getfqdn() DNS lookup from request logging

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

lookup.py

@@ -5,7 +5,6 @@ import inspect
 import json
 import random
 import re
-import socket
 import sys
 import traceback
 import typing
@@ -385,7 +384,7 @@ def index() -> str | Response:
             lat=lat,
             lon=lon,
             remote_addr=remote_addr,
-            fqdn=socket.getfqdn(remote_addr) if remote_addr else None,
+            fqdn=None,
             result=result,
             response_time_ms=int((time() - t0) * 1000),
         )