Rollup merge of rust-lang#97879 - hermitcore:condvar, r=Dylan-DPC

remove unneeded code

The init function isn't longer part of `Condvar`. Consequently, we removed the implementation for the target os `hermit`.

Author: matthiaskrgr

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

@@ -24,11 +24,6 @@ impl Condvar {
         Condvar { counter: AtomicUsize::new(0), sem1: ptr::null(), sem2: ptr::null() }
     }
 
-    pub unsafe fn init(&mut self) {
-        let _ = abi::sem_init(&mut self.sem1 as *mut *const c_void, 0);
-        let _ = abi::sem_init(&mut self.sem2 as *mut *const c_void, 0);
-    }
-
     pub unsafe fn notify_one(&self) {
         if self.counter.load(SeqCst) > 0 {
             self.counter.fetch_sub(1, SeqCst);