chore(nlp-service): remove unused dateparser dependency

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

nlp-service/extractor.py

@@ -5,8 +5,6 @@ import re
 from datetime import date
 from typing import TYPE_CHECKING
 
-import dateparser
-
 from models import ParseResponse
 from person_matcher import PersonMatcher
 

nlp-service/requirements.txt

@@ -1,6 +1,5 @@
 fastapi[standard]==0.115.6
 uvicorn[standard]==0.34.0
-dateparser>=1.2,<2.0
 rapidfuzz>=3.0,<4.0
 psycopg2-binary>=2.9,<3.0
 pytest>=8.0,<9.0