remove superfluous code

src/main.js

@@ -1,5 +1,3 @@
-// The Vue build version to load with the `import` command
-// (runtime-only or standalone) has been set in webpack.base.conf with an alias.
 import Vue from 'vue'
 import App from './App.vue'
 import store from './vuex/store'

src/vuex/store.js

@@ -9,13 +9,6 @@ import { hasWebAudioAPI } from '../unit/music'
 const { fromJS, List } = require('immutable')
 Vue.use(Vuex)
 
-let ttt = lastRecord && !isNaN(parseInt(lastRecord.speedRun, 10))
-  ? parseInt(lastRecord.speedRun, 10)
-  : 1
-if (ttt < 1 || ttt > 6) {
-  ttt = 1
-}
-
 let clearLinesInitState = lastRecord &&
   !isNaN(parseInt(lastRecord.clearLines, 10))
   ? parseInt(lastRecord.clearLines, 10)