Removed unused constants. (#40)

Author: Kevin Hellemun

tests/model/generated/object/test_notification_url.py

@@ -9,12 +9,6 @@
 
 class TestNotificationUrl(bunq_test.BunqSdkTestCase):
     # Getter string constants
-    # Assertion errors
-    _ASSERT_SHOULD_NOT_REACH_THIS_CODE_ERROR = \
-        'Something super weird just happen'
-    _ASSERT_JSON_DECODE_ERROR = \
-        'Might be that the JSON file is not a valid json.'
-    _ASSERT_OBJECT_IS_NULL_ERROR = 'Object seems to be null.'
     _GETTER_PAYMENT = 'Payment'
     _GETTER_BUNQ_ME_TAB = 'BunqMeTab'
     _GETTER_CHAT_MESSAGE_ANNOUNCEMENT = 'ChatMessageAnnouncement'