Closes #17725: Clean up import statements (#17728)

* #17725: Resolve all F401 errors

* Tweak noqa designation

netbox/utilities/management/commands/calculate_cached_counts.py

@@ -1,7 +1,6 @@
 from collections import defaultdict
 
 from django.core.management.base import BaseCommand
-from django.db.models import Count, OuterRef, Subquery
 
 from netbox.registry import registry
 from utilities.counters import update_counts

netbox/utilities/markdown.py

@@ -14,7 +14,7 @@ class StrikethroughExtension(markdown.Extension):
     """
     def extendMarkdown(self, md):
         md.inlinePatterns.register(
-            markdown.inlinepatterns.SimpleTagPattern(STRIKE_RE, 'del'),
+            SimpleTagPattern(STRIKE_RE, 'del'),
             'strikethrough',
             200
         )

netbox/utilities/release.py

@@ -1,9 +1,9 @@
 import datetime
 import os
-import yaml
 from dataclasses import asdict, dataclass, field
-from typing import List, Union
+from typing import Union
 
+import yaml
 from django.core.exceptions import ImproperlyConfigured
 
 from utilities.datetime import datetime_from_timestamp

netbox/utilities/serializers/json.py

@@ -1,5 +1,5 @@
 from django.contrib.postgres.fields import ArrayField
-from django.core.serializers.json import Deserializer, Serializer as Serializer_  # noqa
+from django.core.serializers.json import Deserializer, Serializer as Serializer_  # noqa: F401
 from django.utils.encoding import is_protected_type
 
 # NOTE: Module must contain both Serializer and Deserializer

netbox/utilities/templatetags/form_helpers.py

@@ -1,8 +1,6 @@
-import warnings
-
 from django import template
 
-from utilities.forms.rendering import FieldSet, InlineFields, ObjectAttribute, TabbedGroups
+from utilities.forms.rendering import InlineFields, ObjectAttribute, TabbedGroups
 
 __all__ = (
     'getfield',