remove empty object

app/components/SimpleEditor/miniEditor/miniEditor.js

@@ -30,7 +30,7 @@ class MiniEditor extends ProseEditor {
     let Overlay = this.componentRegistry.get('overlay')
 
     var commentsPane = $$(Comments, {
-      comments: this.props.comments || {},
+      comments: this.props.comments,
       fragment: this.props.fragment,
       update: this.props.update,
       user: this.props.user