chore: Remove user warning

Author: pawamoy

src/mkdocstrings/handlers/python/__init__.py

@@ -1,7 +1,6 @@
 """This module implements a handler for the Python language."""
 
 import posixpath
-import warnings
 from typing import Any, BinaryIO, Iterator, List, Optional, Tuple
 
 from mkdocstrings.handlers.base import BaseHandler
@@ -10,14 +9,6 @@
 from mkdocstrings.inventory import Inventory
 from mkdocstrings.loggers import get_logger
 
-warnings.warn(
-    "The 'python-legacy' extra of mkdocstrings will become mandatory in the next release. "
-    "We have no way to detect if you already specify it, so if you do, please ignore "
-    "this warning. You can globally disable it with the PYTHONWARNINGS environment variable: "
-    "PYTHONWARNINGS=ignore::UserWarning:mkdocstrings.handlers.python",
-    UserWarning,
-)
-
 # TODO: add a deprecation warning once the new handler handles 95% of use-cases
 
 log = get_logger(__name__)