Bug 1635646 - do not print accessible when logging fetch children action error. r=mtigley

Differential Revision: https://phabricator.services.mozilla.com/D73992

devtools/client/accessibility/reducers/accessibles.js

@@ -123,7 +123,7 @@ function onReceiveChildren(cache, action) {
   }
 
   if (accessible.actorID) {
-    console.warn(`Error fetching children: `, accessible, error);
+    console.warn(`Error fetching children: `, error);
     return cache;
   }