tests: Sync pylint's no-else-return

See https://pylint.readthedocs.io/en/latest/user_guide/messages/refactor/no-else-return.html for details.

Fixes: klen#238
Signed-off-by: Stanislav Levin <slev@altlinux.org>

dummy.py

@@ -22,10 +22,10 @@ def __init__(self, filename, loc, use_column=True):
         if test == 1:
             if test == 1:
                 return 28
-            elif test == 2:
+            if test == 2:
                 return 28
             return 28
-        elif test == 2:
+        if test == 2:
             return 28
 
     def __str__(self):