Remove useless __all__ in modules

They bring nothing of value (we never use import * anyway) and introduce
a maintenance burden.

The __all__ that I left might not be very useful either but at least
they are not a pain to maintain; they are also used by pyflakes in some
cases.

modules/phpbb/pages/forum.py

@@ -27,9 +27,6 @@ from .index import PhpBBPage
 from ..tools import parse_date
 
 
-__all__ = ['Link', 'ForumPage', 'TopicPage', 'PostingPage']
-
-
 class Link(object):
     (FORUM,
      TOPIC) = xrange(2)

modules/phpbb/test.py

@@ -21,9 +21,6 @@
 from weboob.tools.test import BackendTest
 
 
-__all__ = ['PhpBBTest']
-
-
 class PhpBBTest(BackendTest):
     BACKEND = 'phpbb'