chore: remove reset-css and nomalize.css from storybook preview

.storybook/base/preview.tsx

@@ -1,5 +1,5 @@
-import 'reset-css';
-import 'normalize.css';
+// import 'reset-css';
+// import 'normalize.css';
 import React from 'react';
 import { StoryContext } from '@storybook/react';
 

packages/semi-ui/_base/_story/a11y.scss

@@ -22,7 +22,6 @@ body[data-page="a11y"] {
     }
     
     .grid {
-    
         .semi-row,
         .semi-row-flex {
             text-align: center;