fix lint

src/server/routes/apiv3/slack-integration-settings.js

@@ -69,7 +69,7 @@ module.exports = (crowi) => {
     return configManager.updateConfigsInTheSameNamespace('crowi', params, true);
   }
 
-
+  // eslint-disable-next-line no-unused-vars
   function generateAccessToken(user) {
     const hasher = crypto.createHash('sha512');
     hasher.update(new Date().getTime() + user._id);