chore: remove useless duplicate code (#50705)

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## What?

Remove useless duplicate code in `next-server.ts`, there are exactly the
same code in next lines.

## Why?

That code have no side effect, run it twice won't make any difference,
seems like someone forgot to delete it.


![image](https://github.com/vercel/next.js/assets/17738556/848d4b03-78cd-40a4-ae8b-a3126101efac)

Co-authored-by: JJ Kasper <jj@jjsweb.site>

packages/next/src/server/next-server.ts

@@ -1542,10 +1542,6 @@ export default class NextNodeServer extends BaseServer {
           }
         }
 
-        if (match) {
-          addRequestMeta(req, '_nextMatch', match)
-        }
-
         // Try to handle the given route with the configured handlers.
         if (match) {
           // Add the match to the request so we don't have to re-run the matcher