erp5_base: remove Person_getLoginValueList.

bt5/erp5_base/SkinTemplateItem/portal_skins/erp5_base/Person_getLoginValueList.py

-def migrateLogin():
-  login = context.newContent(
-    portal_type='Login',
-    reference=context.getReference(),
-    password=context.getPassword(),
-  )
-  login.validate()
-  return login
-
-login_list = context.objectValues(portal_type='Login')
-
-if not login_list:
-  return [migrateLogin()]
-elif not [x for x in login_list if x.getValidationState() == 'validated']:
-  return [migrateLogin()] + login_list
-else:
-  return login_list