Unbreak for code in rest tables and remove unnecessary import (#30314)

components/rest/RestOperation.module.scss

@@ -13,6 +13,6 @@
   table-layout: fixed !important;
 }
 
-.codeBlock code {
+.codeBlock code:not(td *) {
   word-break: break-all;
 }

components/ui/MiniTocs/MiniTocs.tsx

@@ -1,4 +1,3 @@
-import React from 'react'
 import { Heading, NavList } from '@primer/react'
 import cx from 'classnames'