fix: remove extra code

Author: kiram15

enterprise_access/apps/customer_billing/tests/test_models.py

@@ -28,32 +28,11 @@
 from enterprise_access.apps.customer_billing.stripe_event_handlers import StripeEventHandler
 from enterprise_access.apps.provisioning.models import GetCreateSubscriptionPlanStep
 from enterprise_access.apps.provisioning.tests.factories import ProvisionNewCustomerWorkflowFactory
+from enterprise_access.apps.customer_billing.tests.test_stripe_event_handlers import AttrDict
 
 User = get_user_model()
 
 
-class AttrDict(dict):
-    """
-    Minimal helper that allows both attribute (obj.foo) and item (obj['foo']) access.
-    Recursively converts nested dicts to AttrDicts, but leaves non-dict values as-is.
-    """
-    def __getattr__(self, name):
-        try:
-            value = self[name]
-        except KeyError as e:
-            raise AttributeError(name) from e
-        return value
-
-    def __setattr__(self, name, value):
-        self[name] = value
-
-    @staticmethod
-    def wrap(value):
-        if isinstance(value, dict) and not isinstance(value, AttrDict):
-            return AttrDict({k: AttrDict.wrap(v) for k, v in value.items()})
-        return value
-
-
 @ddt.ddt
 class TestCheckoutIntentModel(TestCase):
     """