Fix electron

public/electron.js

@@ -82,8 +82,6 @@ function createWindow() {
     app.dock.hide();
   }
 
-  mainWindow.openDevTools();
-
   // and load the index.html of the app.
   const startUrl = process.env.ELECTRON_START_URL || url.format({
     pathname: path.join(__dirname, '../build/index.html'),