fixup! fixup! fixup! chore: revert dialect changes

ibis/backends/sqlite/udf.py

@@ -5,7 +5,6 @@
 import math
 import operator
 from collections import defaultdict
-from datetime import date
 from typing import TYPE_CHECKING, Any, NamedTuple
 from urllib.parse import parse_qs, urlsplit
 from uuid import uuid4
@@ -358,11 +357,6 @@ def _ibis_extract_user_info(url):
     return f"{username}:{password}"
 
 
-@udf
-def _ibis_date_from_parts(year, month, day):
-    return date(year, month, day).isoformat()
-
-
 class _ibis_var:
     def __init__(self, offset):
         self.mean = 0.0