removed iostream from bufsiz

rotarymars · rotarymars · commit fd7a5076975f · 2025-07-20T20:03:27.000+09:00
diff --git a/reference/cstdio/bufsiz.md b/reference/cstdio/bufsiz.md
@@ -15,7 +15,6 @@
 ## 例
 ```cpp example
 #include <cstdio>
-#include <iostream>
 
 int main() {
   // BUFSIZの値を表示
