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/americanexpress/pages.py

@@ -29,9 +29,6 @@ from weboob.tools.capabilities.bank.transactions import FrenchTransaction as Tra
 from weboob.tools.date import ChaoticDateGuesser
 
 
-__all__ = ['LoginPage', 'AccountsPage', 'TransactionsPage']
-
-
 class LoginPage(BasePage):
     def login(self, username, password):
         self.browser.select_form(name='ssoform')
@@ -43,7 +40,6 @@ class LoginPage(BasePage):
         self.browser.submit(nologin=True)
 
 
-
 class AccountsPage(BasePage):
     def get_list(self):
         for box in self.document.getroot().cssselect('div.roundedBox div.contentBox'):
@@ -67,7 +63,6 @@ class TransactionsPage(BasePage):
     COL_LABEL = 3
     COL_VALUE = -1
 
-
     def is_last(self):
         current = False
         for option in self.document.xpath('//select[@id="viewPeriod"]/option'):