Update app/admin/post-query/page.tsx

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: HACO8888

app/admin/post-query/page.tsx

@@ -360,11 +360,4 @@ export default function Page() {
   );
 }
 
-/* --- helpers --- */
-
-function csvEscape(s: string) {
-  if (s.includes(",") || s.includes("\"") || s.includes("\n")) {
-    return `"${s.replace(/"/g, "\"\"")}"`;
-  }
-  return s;
-}
+/* --- helpers --- */