Removed unit test for unknown emails

This behaviour is going to change, and by splitting that change up into
two commits the diff makes much more sense.

tests/test_webhooks.py

@@ -160,27 +160,6 @@ class UserModifiedTest(AbstractCloudTest):
         self.assertEqual('คนรักของผัดไทย', db_user['full_name'])
         self.assertEqual({'subscriber'}, set(db_user['roles']))
 
-    def test_unknown_email(self):
-        payload = {'id': 1112333,
-                   'old_email': 'unknown@email.address',
-                   'full_name': 'ကြယ်ဆွတ်',
-                   'email': 'new@email.address',
-                   'roles': ['cloud_demo']}
-        as_json = json.dumps(payload).encode()
-        mac = hmac.new(self.hmac_secret,
-                       as_json, hashlib.sha256)
-        self.post('/api/webhooks/user-modified',
-                  data=as_json,
-                  content_type='application/json',
-                  headers={'X-Webhook-HMAC': mac.hexdigest()},
-                  expected_status=204)
-
-        # Check the effect on the user
-        db_user = self.fetch_user_from_db(self.uid)
-        self.assertEqual('old@email.address', db_user['email'])
-        self.assertEqual('คนรักของผัดไทย', db_user['full_name'])
-        self.assertEqual({'subscriber'}, set(db_user['roles']))
-
     def test_huge_request(self):
         payload = b'a' * 1024 * 100
         mac = hmac.new(self.hmac_secret, payload, hashlib.sha256)