Remove path_and_rename

This function eludes the storage API and was proven to encourage
anti-patterns and security flaws in code that uses it.

aleksis/core/tests/util/test_core_helpers.py

-import re
-
-from aleksis.core.util.core_helpers import path_and_rename
-
-
-def test_path_and_rename():
-    re_base = r"[a-z0-9]+"
-
-    example_1 = "sdjaasjkl.jpg"
-    re_example_1 = "files/" + re_base + r"\.jpg"
-    re2_example_1 = "images/" + re_base + r"\.jpg"
-    assert re.match(re_example_1, path_and_rename(None, example_1))
-    assert re.match(re2_example_1, path_and_rename(None, example_1, upload_to="images"))
-
-    example_2 = "sdjaasjkl"
-    re_example_2 = "files/" + re_base
-    re2_example_2 = "images/" + re_base
-    assert re.match(re_example_2, path_and_rename(None, example_2))
-    assert re.match(re2_example_2, path_and_rename(None, example_2, upload_to="images"))

aleksis/core/util/core_helpers.py

-import os
 import sys
 from datetime import datetime, timedelta
 from importlib import import_module
 from itertools import groupby
 from operator import itemgetter
 from typing import Any, Callable, Optional, Sequence, Union
-from uuid import uuid4
 
 if sys.version_info >= (3, 9):
     from importlib import metadata
@@ -183,20 +181,6 @@ def has_person(obj: Union[HttpRequest, Model]) -> bool:
         return True
 
 
-def path_and_rename(instance, filename: str, upload_to: str = "files") -> str:
-    """Update path of an uploaded file and renames it to a random UUID in Django FileField."""
-    _, ext = os.path.splitext(filename)
-
-    # set filename as random string
-    new_filename = f"{uuid4().hex}{ext}"
-
-    # Create upload directory if necessary
-    os.makedirs(os.path.join(settings.MEDIA_ROOT, upload_to), exist_ok=True)
-
-    # return the whole path to the file
-    return os.path.join(upload_to, new_filename)
-
-
 def custom_information_processor(request: HttpRequest) -> dict:
     """Provide custom information in all templates."""
     from ..models import CustomMenu