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/btdigg/pages/index.py

@@ -2,8 +2,6 @@
 
 from weboob.tools.browser import BasePage
 
-__all__ = ['IndexPage']
-
 
 class IndexPage(BasePage):
     pass

modules/btdigg/pages/torrents.py

@@ -9,9 +9,6 @@ from weboob.capabilities.torrent import Torrent, MagnetOnly
 from weboob.capabilities.base import NotAvailable
 
 
-__all__ = ['TorrentsPage', 'TorrentPage']
-
-
 class TorrentsPage(BasePage):
 
     def iter_torrents(self):
@@ -74,7 +71,6 @@ class TorrentPage(BasePage):
         delta = timedelta(**{valueunit: float(valueago)})
         date = datetime.now() - delta
 
-
         files = []
         for tr in trs[15:]:
             files.append(unicode(tr.cssselect('td')[1].text))