Fix pylint and flake issues

homeassistant/components/sensor/arest.py

@@ -30,7 +30,6 @@ def setup_platform(hass, config, add_devices, discovery_info=None):
     var_conf = config.get(CONF_MONITORED_VARIABLES)
     pins = config.get('pins', None)
 
-
     if resource is None:
         _LOGGER.error('Not all required config keys present: %s',
                       CONF_RESOURCE)

homeassistant/components/switch/wemo.py

@@ -15,7 +15,7 @@ REQUIREMENTS = ['pywemo==0.3.2']
 _LOGGER = logging.getLogger(__name__)
 
 
-# pylint: disable=unused-argument
+# pylint: disable=unused-argument, too-many-function-args
 def setup_platform(hass, config, add_devices_callback, discovery_info=None):
     """ Find and return WeMo switches. """
     import pywemo