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/boursorama/pages/card_history.py

@@ -25,9 +25,6 @@ from weboob.tools.browser import BasePage
 from weboob.tools.capabilities.bank.transactions import FrenchTransaction
 
 
-__all__ = ['CardHistory']
-
-
 class Transaction(FrenchTransaction):
     PATTERNS = [(re.compile('^(ACHAT |PAIEMENT )?CARTE (?P<dd>\d{2})(?P<mm>\d{2})(?P<yy>\d{2}) (\d{2} )?(?P<text>.*)'),
                                                             FrenchTransaction.TYPE_CARD),