Fixed a couple of deprecation warnings

django/contrib/admin/checks.py

@@ -3,7 +3,7 @@ from __future__ import unicode_literals
 
 from itertools import chain
 
-from django.contrib.admin.util import get_fields_from_path, NotRelationField
+from django.contrib.admin.utils import get_fields_from_path, NotRelationField
 from django.core import checks
 from django.db import models
 from django.db.models.fields import FieldDoesNotExist

django/contrib/contenttypes/checks.py

@@ -2,15 +2,15 @@
 from __future__ import unicode_literals
 
 from django.utils import six
+from django.apps import apps
 
 
 def check_generic_foreign_keys(**kwargs):
     from .generic import GenericForeignKey
-    from django.db import models
 
     errors = []
     fields = (obj
-        for cls in models.get_models()
+        for cls in apps.get_models()
         for obj in six.itervalues(vars(cls))
         if isinstance(obj, GenericForeignKey))
     for field in fields: