Update component import paths and remove unused import

library/common/util.js

@@ -1,7 +1,6 @@
 import dict from "./dict"
 import dayjs from './monent'
 import qs from 'query-string'
-import reg from "./regular";
 import tree from "./tree";
 
 const confirm = (content, title, config) => {
@@ -309,7 +308,6 @@ export default {
   qs,
   permissions,
   copy,
-  reg,
   arr2tree(list, config = {}) {
     const {key = 'id', parent = 'parentId', children = 'children'} = config
     const result = []