Refs #12990 -- Removed django.contrib.postgres.fields.JSONField per deprecation timeline.

tests/postgres_tests/test_json_deprecation.py

@@ -1,35 +1,17 @@
 try:
     from django.contrib.postgres import forms
-    from django.contrib.postgres.fields import JSONField
     from django.contrib.postgres.fields.jsonb import (
         KeyTextTransform, KeyTransform,
     )
 except ImportError:
     pass
 
-from django.core.checks import Warning as DjangoWarning
 from django.utils.deprecation import RemovedInDjango40Warning
 
 from . import PostgreSQLSimpleTestCase
-from .models import PostgreSQLModel
 
 
 class DeprecationTests(PostgreSQLSimpleTestCase):
-    def test_model_field_deprecation_message(self):
-        class PostgreSQLJSONModel(PostgreSQLModel):
-            field = JSONField()
-
-        self.assertEqual(PostgreSQLJSONModel().check(), [
-            DjangoWarning(
-                'django.contrib.postgres.fields.JSONField is deprecated. '
-                'Support for it (except in historical migrations) will be '
-                'removed in Django 4.0.',
-                hint='Use django.db.models.JSONField instead.',
-                obj=PostgreSQLJSONModel._meta.get_field('field'),
-                id='fields.W904',
-            ),
-        ])
-
     def test_form_field_deprecation_message(self):
         msg = (
             'django.contrib.postgres.forms.JSONField is deprecated in favor '