Remove duplicate shuffle function

lib/utils/common.js

@@ -28,18 +28,6 @@ utils.common = {
   quote: function (obj) {
     return JSON.stringify(obj)
   },
-  shuffle: function (list) {
-    let newArray = list.slice()
-    let len = newArray.length
-    let i = len
-    while (i--) {
-      let p = parseInt(Math.random() * len)
-      let t = newArray[i]
-      newArray[i] = newArray[p]
-      newArray[p] = t
-    }
-    return newArray
-  },
   uniqueList: function (list) {
     let tmp = {}
     let r = []