Remove unused imports

aleksis/apps/alsijil/models.py

 from datetime import date
 from typing import Optional, Union
 from urllib.parse import urlparse
-from uuid import uuid4
 
 from django.db import models
 from django.db.models.constraints import CheckConstraint
 from django.db.models.query_utils import Q
 from django.urls import reverse
 from django.utils.formats import date_format
-from django.utils.text import slugify
 from django.utils.translation import gettext_lazy as _
 
 from calendarweek import CalendarWeek