remove unused state

packages/app/src/client/services/AdminHomeContainer.js

@@ -25,7 +25,6 @@ export default class AdminHomeContainer extends Container {
     this.timer = null;
 
     this.state = {
-      retrieveError: null,
       growiVersion: '',
       nodeVersion: '',
       npmVersion: '',

packages/app/src/components/Admin/AdminHome/AdminHome.jsx

@@ -28,7 +28,6 @@ const AdminHome = (props) => {
     }
     catch (err) {
       toastError(err);
-      adminHomeContainer.setState({ retrieveError: err });
       logger.error(err);
     }
   }, [adminHomeContainer]);