1 files changed, 0 insertions, 11 deletions
diff --git a/thread_win32.h b/thread_win32.h
index 1b4981a5e3..d4aea04f8a 100644
--- a/thread_win32.h
+++ b/thread_win32.h
@@ -26,17 +26,6 @@ typedef HANDLE rb_thread_id_t;
 typedef CRITICAL_SECTION rb_thread_lock_t;
 typedef struct rb_thread_cond_struct rb_thread_cond_t;
 
-int native_mutex_lock(rb_thread_lock_t *);
-int native_mutex_unlock(rb_thread_lock_t *);
-int native_mutex_trylock(rb_thread_lock_t *);
-void native_mutex_initialize(rb_thread_lock_t *);
-
-void native_cond_signal(rb_thread_cond_t *cond);
-void native_cond_broadcast(rb_thread_cond_t *cond);
-void native_cond_wait(rb_thread_cond_t *cond, rb_thread_lock_t *mutex);
-void native_cond_initialize(rb_thread_cond_t *cond);
-void native_cond_destroy(rb_thread_cond_t *cond);
-
 typedef struct native_thread_data_struct {
     HANDLE interrupt_event;
 } native_thread_data_t;