fix(sys/hermit): remove obsolete network initialization

This function does not exist as of hermit-sys 0.4.1 [1].
Once std does not call this function, we can remove it entirely.

[1]: hermit-os/hermit-rs@e38f246#diff-a9b7fa816defab285f0d4fe69d4df4a0cbbcf1c89913000df3273aded949f257R10

Signed-off-by: Martin Kröning <martin.kroening@eonerc.rwth-aachen.de>

Author: mkroening

library/std/src/sys/hermit/mod.rs

@@ -101,7 +101,6 @@ pub extern "C" fn __rust_abort() {
 // SAFETY: must be called only once during runtime initialization.
 // NOTE: this is not guaranteed to run, for example when Rust code is called externally.
 pub unsafe fn init(argc: isize, argv: *const *const u8, _sigpipe: u8) {
-    let _ = net::init();
     args::init(argc, argv);
 }
 

library/std/src/sys/hermit/net.rs

@@ -33,13 +33,7 @@ pub fn cvt_gai(err: i32) -> io::Result<()> {
     ))
 }
 
-/// Checks whether the HermitCore's socket interface has been started already, and
-/// if not, starts it.
-pub fn init() {
-    if unsafe { netc::network_init() } < 0 {
-        panic!("Unable to initialize network interface");
-    }
-}
+pub fn init() {}
 
 #[derive(Debug)]
 pub struct Socket(FileDesc);