delete unused HangThread struct

Author: ngoldbaum

pyo3-ffi/src/pystate.rs

@@ -80,21 +80,6 @@ pub enum PyGILState_STATE {
     PyGILState_UNLOCKED,
 }
 
-struct HangThread;
-
-impl Drop for HangThread {
-    fn drop(&mut self) {
-        loop {
-            #[cfg(target_family = "unix")]
-            unsafe {
-                libc::pause();
-            }
-            #[cfg(not(target_family = "unix"))]
-            std::thread::sleep(std::time::Duration::from_secs(9_999_999));
-        }
-    }
-}
-
 // The PyGILState_Ensure function will call pthread_exit during interpreter shutdown,
 // which causes undefined behavior. Redirect to the "safe" version that hangs instead,
 // as Python 3.14 does.