tests: implicit string concat

Change-Id: Ib44d088d46c2ea1cdeacd12ab42dcb885fcf07e5

Author: xqt

tests/dry_api_tests.py

@@ -233,7 +233,7 @@ def test_unicode(self) -> None:
                             parameters={'action': 'query', 'meta': 'siteinfo'})
 
         expect = ('MockSite()User(User:محمد الفلسطيني)'
-                  + "[('action', 'query'), ('meta', 'siteinfo')]")
+                  "[('action', 'query'), ('meta', 'siteinfo')]")
 
         self.assertEqual(repr(req._uniquedescriptionstr()), repr(expect))