remove codeSandbox integration option from docs

Author: mohsinulhaq

doczrc.js

@@ -1,8 +1,9 @@
-import { css } from 'docz-plugin-css';
+import {css} from 'docz-plugin-css';
 
 export default {
   title: 'react-popper-tooltip',
   description: 'Documentation',
   base: '/react-popper-tooltip/',
+  codeSandbox: false,
   plugins: [css()]
 };