Fix pylint 1.7.2 no-else-return issues (#8361)

* Fix pylint 1.7.2 no-else-return issues

* Update tomato.py

homeassistant/components/alarm_control_panel/envisalink.py

@@ -113,8 +113,7 @@ class EnvisalinkAlarm(EnvisalinkDevice, alarm.AlarmControlPanel):
         """Regex for code format or None if no code is required."""
         if self._code:
             return None
-        else:
-            return '^\\d{4,6}$'
+        return '^\\d{4,6}$'
 
     @property
     def state(self):