remove unused codes

packages/app/src/client/util/editor.ts

@@ -7,7 +7,6 @@ type OptionsToSave = {
   grantUserGroupName?: string | null;
 };
 
-// TODO: Remove editorContainer upon migration to SWR
 export const getOptionsToSave = (
     isSlackEnabled: boolean,
     slackChannels: string,

packages/app/src/components/PageEditorByHackmd.jsx

@@ -1,4 +1,4 @@
-import React, { useState, useEffect } from 'react';
+import React from 'react';
 
 import PropTypes from 'prop-types';
 import { useTranslation } from 'react-i18next';

packages/app/src/stores/editor.tsx

@@ -8,7 +8,7 @@ import { IEditorSettings } from '~/interfaces/editor-settings';
 import { SlackChannels } from '~/interfaces/user-trigger-notification';
 
 import {
-  useCurrentUser, useDefaultIndentSize, useIsGuestUser, useCurrentPageId,
+  useCurrentUser, useDefaultIndentSize, useIsGuestUser,
 } from './context';
 import { localStorageMiddleware } from './middlewares/sync-to-storage';
 import { useSWRxTagsInfo } from './page';