Fix device removal (#4354)

Co-authored-by: Koen Kanters <koenkanters94@gmail.com>

lib/extension/homeassistant.js

@@ -2134,7 +2134,7 @@ class HomeAssistant extends Extension {
     }
 
     getConfigs(resolvedEntity) {
-        if (!resolvedEntity || !resolvedEntity.definition) return [];
+        if (!resolvedEntity || !resolvedEntity.definition || !mapping[resolvedEntity.definition.model]) return [];
 
         let configs = mapping[resolvedEntity.definition.model].slice();
         configs.push(cfg.sensor_linkquality);