Rollup merge of rust-lang#120462 - mu001999:clean, r=Nilstrieb

Clean dead code

Detected by rust-lang#118257

Author: Dylan-DPC

library/std/src/sys/pal/wasi/net.rs

@@ -538,7 +538,4 @@ pub mod netc {
         pub sin6_flowinfo: u32,
         pub sin6_scope_id: u32,
     }
-
-    #[derive(Copy, Clone)]
-    pub struct sockaddr {}
 }