fix: remove unused code

components/comments/index.js

@@ -24,20 +24,6 @@ const Comments = ({ frontMatter }) => {
   let term
   const comment = siteMetadata?.comment
   if (!comment || Object.keys(comment).length === 0) return <></>
-  switch (
-    siteMetadata.comment.giscusConfig.mapping ||
-    siteMetadata.comment.utterancesConfig.issueTerm
-  ) {
-    case 'pathname':
-      term = frontMatter.slug
-      break
-    case 'url':
-      term = window.location.href
-      break
-    case 'title':
-      term = frontMatter.title
-      break
-  }
   return (
     <div id="comment">
       {siteMetadata.comment && siteMetadata.comment.provider === 'giscus' && <GiscusComponent />}